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Management Accounting
Willie Seal, University of Essex, UK
Ray Garrison, Brigham Young University, Provo, Utah, USA
Eric Noreen, INSEAD, France

Relevant Costs for Decision Making

Self-test Questions



1

One of the following is a relevant cost to the decision to build a factory
(Learning Objective 1 Ch 9)
A)The cost of a survey that has already been paid for
B)The government grant available
C)The land owned by the company on which the factory would be built
D)The cost of the existing factory on that site
2

One of the following types of cost is an irrelevant cost
(Learning Objective 1 Ch 9)
A)Future costs that differ between alternatives
B)Unavoidable cost
C)Differential cost
D)Sunk cost
3

One of the following statements is true when considering replacing old equipment
(Learning Objective 2 Ch 9)
A)We must recover the written down value of an asset in the balance sheet
B)We must ignore the greater capacity of the new machine.
C)We must take into consideration the depreciation rates on the old machine
D)We must take into account the useful life of the new machine
4

One of the following statements is true
(Learning Objective 1 Ch 9)
A)Costs used in financial accounts will always be relevant to any decision
B)If costs are relevant to one decision then they will be relevant to all decisions
C)Different costs should be used for different purposes
D)Costs used for product pricing purposes will always be relevant to any decision
5

The WDV of an old widget machine is £200,000. The scrap value of this old machine is £50,000. The Cost of a new widget machine is £500,000. The costs of producing widgets with the new machine will be £80,000 cheaper per year. The life of the new machine will be 6 years. The fixed costs are £20,000 per year. Ignore the time value of money. The differential benefit/ (cost) of the new machine will be
(Learning Objective 2 Ch 9)
A)30,000
B)(170,000)
C)(290,000)
D)80,000
6

When debating whether to drop a product line one of the following items should be ignored
(Learning Objective 3 Ch 9)
A)The contribution from each of the products
B)The shared fixed costs of all the product lines
C)The possible replacement products
D)The individual fixed costs (not including depreciation) of each of the product lines
7

A company is thinking of buying in an assembly that it currently makes. The cost of buying it in would be £13. The unit costs of making the assembly are Material £3, Labour £6, Variable Overhead £2, Depreciation of equipment £2, Apportioned overheads £1. The equipment used has no scrap value. Calculate the differential benefit/ (cost) of buying the assembly in.
(Learning Objective 4 Ch 9)
A)nil
B)(£1)
C)(£2)
D)(£4)
8

Same information as Q7 but if the assembly is bought in equipment could be used for making another product with a contribution of £4 per unit. Calculate the differential benefit/ (cost) of buying the assembly in.
(Learning Objective 4 Ch 9)
A)The answer would be the same as Q7
B)£6
C)(£8)
D)£2
9

A firm make dresses. The material and labour cost of producing each dress is £4. The fixed cost apportioned to each dress is £5. The current price each dress is sold for is £12. A special order is comes in and the buyer wants to pay £7. One of the following statements is true
(Learning Objective 5 Ch 9)
A)The order should be rejected, as the price is less than the normal price
B)The order should be rejected, as the price is less than the absorption cost
C)The order should be accepted as we would be making a gain of £3 per dress.
D)The order should be accepted as we would be making a gain of £8 per dress.
10

The firm in Q9 taking the decision should not consider one of the following factors
(Learning Objective 5 Ch 9)
A)The market that the buyer under the special order will sell the dresses.
B)The shared fixed costs with another product
C)The firm’s spare capacity
D)Whether the people making the dresses are paid a weekly wage or are on piece work.
11

One of these statements will be true when considering the profitable use of a constrained resource
(Learning Objective 6 Ch 9)
A)The manager should select the course of action that maximises the total contribution margin
B)The manager should select the course of action that maximises the profit of the firm
C)The manager should select the course of action that minimises the fixed costs
D)The manager should select the course of action that maximises the sales
12

There is a shortage of machine hour. The contribution per machine hour of each of the products below is as follows, What order should they be made in?

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(Learning Objective 6 Ch 10)
A)A B C D
B)D C B A
C)We cannot tell
D)All of them should be made
13

The following data relates to Q13 – 18 and to a factory where there are only 10,000 labour hours.

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What order should they be made in?


(Learning Objective 6 Ch 10)
A)A B C D
B)D C B A
C)C D A B
D)B A D C
14

How many should be made of product C
(Learning Objective 6 Ch 10)
A)6,000
B)1,000
C)none
D)15,000
15

How many should be made of product D
(Learning Objective 6 Ch 10)
A)6,000
B)1,000
C)none
D)15,000
16

How many should be made of product A
(Learning Objective 6 Ch 10)
A)6,000
B)1,000
C)none
D)15,000
17

How many should be made of product B
(Learning Objective 6 Ch 10)
A)6,000
B)1,000
C)none
D)15,000
18

One of the following statements is untrue when considering whether joint products should be sold at the split off point or processed further?
(Learning Objective 7 Ch 10)
A)All costs up to the point of split off should be ignored
B)All costs after the point of split off should be considered
C)Depreciation should always be ignored
D)Allocated costs are always important