D774 Introduction to Business Accounting - Set 5 - Part 2

Correct Answer: Flour is direct; building electricity is indirect

A direct cost can be easily and conveniently traced to the cost object, so flour in a loaf is direct. Building-wide electricity cannot be practically traced to one loaf, making it an indirect cost treated as overhead. Option a is incorrect because the whole-building electricity cannot be conveniently traced to a single loaf, so it is indirect rather than direct; only the flour, which clearly goes into the loaf, qualifies as a direct cost. Option c is incorrect because the flour is easily traced to the specific loaf and is therefore direct; lumping it together with the untraceable building electricity as indirect ignores how plainly the flour belongs to that loaf. Option d is incorrect because the labels are reversed: flour traces directly to the loaf, while building electricity does not, so calling flour indirect and electricity direct gets both classifications exactly backwards.

Correct Answer: Direct or indirect depends on the object

Whether a cost is direct or indirect is defined relative to the chosen cost object. The supervisor's salary is indirect to a single loaf yet direct to the production department, so the answer depends on which object you pick. Option b is incorrect because the salary is not always direct; relative to one loaf it cannot be conveniently traced and is indirect, so claiming it is direct in every case ignores how the cost object changes the answer. Option c is incorrect because the direct-versus-indirect question is about traceability, not behavior; whether the salary is variable or fixed is a separate cost-behavior matter and does not resolve how to trace it to an object. Option d is incorrect because the salary is in fact traceable to the production department as a whole, so saying supervisor salaries are never traceable overstates the case; traceability simply depends on the object chosen.

Correct Answer: Common cost

A common cost is an indirect cost incurred to support several cost objects at once and cannot be traced to any single one. The shared rent benefits the bread, cake, and catering lines together, so it is common to all. Option a is incorrect because a direct cost can be easily traced to one specific cost object, the opposite of shared rent that serves three lines at once and belongs to none of them individually, so direct does not apply. Option b is incorrect because prime cost is the sum of direct materials and direct labor, a grouping of traceable production inputs; shared rent is neither materials nor labor and cannot be traced to a single line. Option d is incorrect because variable describes a cost that changes with activity, a behavior classification; the rent's defining trait here is that it is shared and untraceable across several objects, which is what common cost captures.

Correct Answer: Direct materials plus direct labor

Prime cost combines direct materials and direct labor, the primary directly traceable inputs to the product. Both pieces are direct costs, which is exactly what the maker wants when grouping the materials put in and the labor that handles them. Option b is incorrect because direct labor plus manufacturing overhead is conversion cost, the cost of converting materials into a finished product; it leaves out direct materials, so it cannot be the primary-input grouping the maker described. Option c is incorrect because direct materials plus manufacturing overhead is not a standard grouping; prime cost pairs materials with labor, and dropping labor in favor of overhead mixes a direct input with an indirect one improperly. Option d is incorrect because manufacturing overhead plus period costs combines an indirect production cost with non-production costs, which forms no recognized manufacturing grouping and certainly not the directly traceable prime cost.

Correct Answer: Direct labor plus manufacturing overhead

Conversion cost combines direct labor and manufacturing overhead, the labor and the machines, utilities, and equipment that transform raw materials into a finished product. It deliberately excludes the raw materials themselves, which is what the analyst described. Option a is incorrect because direct materials plus direct labor is prime cost, the grouping of directly traceable inputs; it includes the raw materials, which conversion cost specifically leaves out, so it answers a different grouping. Option b is incorrect because pairing direct materials with overhead skips direct labor, yet labor is the very thing doing the converting; conversion cost needs labor and overhead together, not materials and overhead. Option c is incorrect because selling and administrative costs are period costs of running the business, not production groupings at all; conversion cost is built strictly from manufacturing labor and overhead, not from non-production expenses.

Correct Answer: It double-counts direct labor

Direct labor sits in both prime cost and conversion cost, so adding the two groupings counts direct labor twice. Total product cost is materials plus labor plus overhead once each, which is less than the sum of the two groupings. Option a is incorrect because manufacturing overhead is not omitted; it is fully present inside conversion cost. The real flaw is that direct labor appears in both groupings, so summing them counts that labor a second time. Option c is incorrect because direct materials appears only in prime cost, not in both groupings, so it is counted just once; the item that shows up in both prime and conversion, and thus gets doubled, is direct labor. Option d is incorrect because prime cost is a genuine, standard grouping of direct materials and direct labor; the problem with the sum is not that a grouping is fake but that direct labor overlaps and gets counted twice.

Correct Answer: Prime cost rises; conversion cost unchanged

Raw materials are direct materials, a component of prime cost, so a price increase flows straight into prime cost. Conversion cost is direct labor plus overhead and contains no raw materials, so it stays unchanged. Option b is incorrect because conversion cost holds only direct labor and overhead, neither of which is raw materials; a materials price rise cannot touch conversion cost, while it directly lifts prime cost, so this reverses the effect. Option c is incorrect because the increase cannot reach conversion cost, which excludes raw materials entirely; only prime cost, built partly from direct materials, absorbs the higher prices, so claiming both rise overstates the impact. Option d is incorrect because raw materials are a production cost, not a period cost; the increase raises a manufacturing grouping, specifically prime cost, rather than the selling and administrative costs that period costs cover.

Correct Answer: Variable cost

A variable cost changes in total in direct proportion to activity while staying constant per unit. Flour rises as more loaves are baked, yet each loaf uses the same amount, which is the defining signature of a variable cost. Option a is incorrect because a fixed cost stays the same in total regardless of how many loaves are baked; flour clearly grows as production rises, so it does not match the flat-in-total behavior of a fixed cost. Option b is incorrect because a mixed cost has both a fixed base and a variable part, yet flour has no fixed base charge; it starts from zero and scales entirely with output, which makes it purely variable, not mixed. Option d is incorrect because a step cost stays flat across a range and then jumps to a new level; flour does not hold flat and then leap, it climbs smoothly and proportionally with each additional loaf baked.

Correct Answer: Fixed cost

A fixed cost remains constant in total within the relevant range regardless of activity and must be paid no matter how many products are made. Rent that holds steady from one loaf to ten thousand is the classic example. Option b is incorrect because a variable cost changes in total as activity changes, rising with more output; rent stays flat regardless of how many loaves are baked, so it behaves oppositely to a variable cost. Option c is incorrect because a mixed cost blends a fixed base with a variable component that grows with use; rent here has no usage-based part, it is simply constant, which makes it purely fixed rather than mixed. Option d is incorrect because prime cost is a grouping of direct materials and direct labor, not a behavior describing how a cost reacts to activity; rent's steadiness is a fixed-cost behavior, unrelated to that production grouping.

Correct Answer: It falls

Average fixed cost per unit varies inversely with activity. Spreading the same fixed rent over more loaves means each loaf carries a thinner slice, so the per-loaf figure falls as output rises. This is the key inverse rule. Option a is incorrect because rising activity lowers, not raises, the fixed cost per unit; the same total is spread over more loaves, so each one shoulders less, and the per-unit figure goes up only when activity falls. Option c is incorrect because the per-unit fixed cost does not stay constant; only the total fixed cost holds steady. The per-unit amount changes inversely with output, dropping as more loaves share the same fixed rent. Option d is incorrect because the rent does not change behavior and become variable; it remains a fixed cost in total. What changes is merely the per-unit slice, which falls as production rises, not the cost's classification.

Correct Answer: It rises

When activity falls, the same fixed total is spread over fewer units, so each unit must shoulder more and the per-unit figure rises. The claim that it decreases as activity falls is the well-known backwards trap. Option a is incorrect because the per-unit fixed cost decreases only when activity rises, not when it falls; with fewer units sharing the same fixed total, each carries a larger slice, so the figure climbs rather than drops. Option b is incorrect because only the total fixed cost stays constant; the per-unit amount changes inversely with activity. As output falls, fewer units divide the same total, pushing the per-unit cost upward, not flat. Option d is incorrect because each unit's share of the fixed cost never reaches zero; the fixed total still must be covered by whatever units exist. Lower activity actually raises that share, the opposite of falling to nothing.

Correct Answer: Mixed cost

A mixed cost contains both a fixed component and a variable component bundled into one bill. The flat service charge is the fixed base and the per-kilowatt-hour amount is the variable part, which together signal a mixed cost. Option a is incorrect because a purely variable cost has no fixed base and would start from zero; this bill keeps a flat service charge even at no usage, so the unchanging base rules out a strictly variable cost. Option b is incorrect because a committed cost is a long-term fixed cost that cannot be cut quickly; it does not describe a monthly bill that pairs a flat base with a usage charge that rises with consumption. Option c is incorrect because a purely fixed cost would not grow with usage, yet this bill clearly increases as more kilowatt-hours are consumed; the usage-driven portion means it cannot be classified as simply fixed.

Correct Answer: Mixed cost

The base salary is a fixed component paid regardless of sales, and the commission is a variable component that grows with activity. A cost containing both pieces at once is a mixed cost, exactly what this pay package is. Option a is incorrect because a purely fixed cost would not change with sales, yet the commission portion rises as the salesperson sells more; the presence of that growing piece means the pay is not strictly fixed. Option c is incorrect because a purely variable cost would have no guaranteed floor, but the base salary is paid even on zero sales; that fixed base keeps the compensation from being classified as purely variable. Option d is incorrect because a step cost stays flat over a range and then jumps to a new level; this pay rises smoothly with each sales dollar through the commission, so it does not move in discrete steps.

Correct Answer: Relevant range

The relevant range is the band of activity over which the assumed cost-behavior patterns hold true, including the range where a fixed cost stays flat. Outside that band the tidy rules break down entirely. Option b is incorrect because the contribution margin is what remains from each sale after variable costs, a profit-planning figure; it has nothing to do with naming the activity band over which cost behaviors stay predictable. Option c is incorrect because the break-even point is the activity level where profit is zero, a single point rather than the operating band; the term for where cost-behavior assumptions hold is the relevant range. Option d is incorrect because a cost driver is the factor that causes a cost to be incurred, such as machine hours; it identifies what makes costs grow, not the range within which behaviors remain consistent.

Correct Answer: The linearity assumption

The linearity assumption is the accountant's choice to draw a cost as a straight line within the relevant range, accepting it as a close approximation of the true curve because the difference is negligible inside that narrow band. Option a is incorrect because the step-cost rule describes a fixed cost that jumps to a new flat level once activity outgrows a range; it explains a staircase pattern, not the straight-line approximation of a gently curving cost. Option b is incorrect because overhead allocation spreads indirect costs across products or departments; it is a costing mechanic and has nothing to do with approximating a curved cost function as a straight line. Option d is incorrect because goal congruence aligns a manager's goals with the company's goals, an incentive idea; it is unrelated to the accountant's decision to model costs with straight lines inside the operating band.

Correct Answer: Step cost

A step cost stays flat within a range and then jumps to a new fixed level when activity crosses into the next band. Office space sold in whole increments, where outgrowing one band raises the cost, is a step cost. Option a is incorrect because a variable cost rises smoothly and proportionally with activity from zero; this space cost holds flat across a band and then leaps, a staircase pattern that does not match continuous variable growth. Option b is incorrect because a mixed cost blends a constant base with a usage-based part that scales continuously; the space cost has no smoothly scaling component, it simply jumps in discrete flat steps between increments. Option c is incorrect because step costs do not prorate; you pay for the whole next increment even if you use only part of it, so describing this as a committed cost that prorates misstates how the steps work.

Correct Answer: Lease is committed; advertising is discretionary

A committed fixed cost is long-term and cannot be significantly reduced short term, like a multi-year lease. A discretionary fixed cost can be altered quickly by current decisions, like advertising or training. The pairing matches each correctly. Option a is incorrect because the labels are reversed: a signed multi-year lease is committed since it cannot be escaped quickly, while advertising is discretionary because management can pause it at will, so this pairing flips both terms. Option c is incorrect because advertising is discretionary, not committed; management can cut it on short notice. Only the binding lease is a committed cost, so treating both as committed misclassifies the flexible advertising spend. Option d is incorrect because the binding lease signed years ago is committed, not discretionary; the firm cannot un-sign it this afternoon. Only advertising and training bend to short-term choices, so calling both discretionary mishandles the lease.

Correct Answer: Job order costing

Job order costing suits customized, one-of-a-kind outputs, tracing costs directly to each individual job. A unique retail buildout, tracked on its own tab so the client learns that project's cost, is a textbook job-order situation. Option b is incorrect because process costing fits mass production of identical units, where you average cost across a department; a single one-of-a-kind building is distinct, so averaging would hide what that specific job actually cost. Option c is incorrect because activity-based costing focuses on allocating heavy overhead precisely by activities and cost drivers; the trigger here is a unique custom project, which points to job order rather than activity-based allocation. Option d is incorrect because merchandising is a type of business that resells finished goods unchanged, not a product-costing system for tracking a custom build; a construction project needs job order costing instead.

Correct Answer: Process costing

Process costing fits large volumes of identical units flowing through standardized steps. The company totals the department's costs and divides by units for an average cost each, which suits interchangeable granola bars produced in mass quantity. Option a is incorrect because job order costing tracks distinct, custom jobs one at a time; with thousands of interchangeable granola bars there is no unique job to trace, so averaging across the process is the sensible approach. Option b is incorrect because activity-based costing is aimed at allocating large, diverse overhead precisely by cost drivers; a single uniform product flowing continuously does not present the varied activities that make activity-based costing worthwhile. Option d is incorrect because standard costing is not the system signaled here; the trigger words are mass, identical, continuous output, which point directly to process costing and its average-cost-per-unit calculation.

Correct Answer: Activity-based costing

Activity-based costing allocates overhead precisely by the activities and cost drivers products actually use, such as delivery miles and packaging labor. Charging each order for the effort it truly consumes, rather than spreading evenly, is exactly this method. Option a is incorrect because job order costing traces costs to distinct custom jobs; the issue here is allocating shared overhead precisely across many orders by activity, which is the job of activity-based costing, not job tracking. Option b is incorrect because process costing averages cost across identical units in continuous production; the bakery instead wants order-by-order precision based on actual miles and packaging, the opposite of a single uniform average. Option c is incorrect because merchandising names a business that resells goods unchanged, not a method for allocating overhead; tracking cost drivers to assign overhead accurately describes activity-based costing instead.