题目

The following question is taken from the December 2012 exam paper. The following data relates to a company's overhead cost.

      Time  (units)            Output                Overhead cost  ($)             Price  index

          2 years ago           1,000                               3,700                        121

         Current year           3,000                             13,000                         155

Using the high low technique, what is the variable cost per unit (to the nearest $0.01) expressed in current year prices?

A

 $3.22

B

 $4.13

C

$4.65

D

$5.06

Chapter14Forecasting

The correct answer is B. This is calculated by firstly adjusting the overhead cost from 2 years ago to current price levels by multiplying by 155/121, to obtain a cost of $4,740.

This figure is then used in a high low calculation (change in cost divided by change in activity) to obtain the variable cost per unit (($13,000 - $4,740) / (3,000 units - 1,000 units) = $4.13).

The most popular choice was alternative C, which was selected by majority of candidates. This indicates that although competent in the high low technique they failed to adjust costs to current price levels. In analysing cost data it is important that inflation is allowed for. Those who chose option D indicated that either they guessed badly, or that they could competently perform the high low calculation and that they realised a need to adjust the figures for inflation but failed to do so correctly and multiplied by 121/155). Finally a minority chose alternative A, again possibly suggesting a bad guess or alternatively that they indexed costs to price levels from two years ago.

多做几道

A company uses a standard absorption costing system. Last month budgeted production was 8,000 units and the standard fixed production overhead cost was $15 per unit. Actual production last month was 8,500 units and the actual fixed production overhead cost was $17 per unit.What was the total adverse fixed production overhead variance for last month?

A

$7,500

B

$16,000

C

$17,000

D

$24.500

A cost centre had an overhead absorption rate of $4.25 per machine hour, based on a budgeted activity level of 12,400 machine hours.In the period covered by the budget, actual machine hours worked were 2% more than the budgeted hours and the actual overhead expenditure incurred in the cost centre was $56,389.What was the total over or under absorption of overheads in the cost centre for the period?

A

$1,054 over absorbed

B

$2,635 under absorbed

C

$3,689 over absorbed

D

$3,689 under absorbed

Which of the following would help to explain a favourable direct labour efficiency variance?

(i) Employees were of a lower skill level than specified in the standard

(ii) Better quality material was easier to process

(iii) Suggestions for improved working methods were implemented during the period

A

(i), (ii) and (iii)

B

(i) and (ii) only

C

(ii) and (iii) only

D

(i) and(II) only

Which of the following statements is correct?

A

An adverse direct material cost variance will always be a combination of an adverse material price variance and an adverse material usage variance

B

An adverse direct material cost variance will always be a combination of an adverse material price variance and a favourable material usage variance

C

An adverse direct material cost variance can be a combination of a favourable material price variance and a favourable material usage variance

D

An adverse direct material cost variance can be a combination of a favourable material price variance and an adverse material usage variance

The following information relates to labour costs for the past month:

Budget                 Labour rate                      $10 per hour

                            Production time                15,000 hours

                           Time per unit                     3 hours

                           Production units                5,000 units 

Actual                Wages paid                       $176,000

                          Production                         5,500 units 

                        Total hours worked             14,000 hours

There was no idle time.

What were the labour rate and efficiency variances? 

A

Rate variance                 Efficiency variance

$26,000 Adverse           $25,000 Favourable

B

Rate variance                 Efficiency variance

 $26,000 Adverse           $10,000 Favourable

C

Rate variance                 Efficiency variance

 $36,000 Adverse           $2,500 Favourable

D

Rate variance                 Efficiency variance

 $36,000 Adverse           $25,000 Favourable

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