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Joyce Murphy runs a courier service in downtown Seattle. She charges clients $0.

ID: 2581525 • Letter: J

Question

Joyce Murphy runs a courier service in downtown Seattle. She charges clients $0.56 per mile driven. Joyce has determined that if she drives 2,550 miles in a month, her total operating cost is $775. If she drives 3,650 miles in a month, her total operating cost is $951.     

Required:
1.
Using the high-low method, determine Joyce’s variable and fixed operating cost components. (Round your cost per unit answer to 2 decimal places.)

       


2. Complete the contribution margin income statement for Joyce’s service assuming she drove 1,700 miles last month. (Assume this falls within the relevant range of operations).

Variable Cost per Mile Driven Fixed Cost

Explanation / Answer

Answer:- 1)- High-Low Method:-

Variable Cost per Unit

Variable cost per unit (b) is calculated using the following formula:

Variable Cost per Unit =Y2-Y1/X2-X1

Where,

y2 is the total cost at highest level of activity;

y1 is the total cost at lowest level of activity;
x2 are the number of units/labor hours/machine hours etc. at highest level of activity; and
x1 are the number of units/labor hours/machine hours etc. at lowest level of activity

The variable cost per unit is equal to the slope of the cost volume line (i.e. change in total cost ÷ change in number of machine hours).

Total Fixed Cost

Total fixed cost (a) is calculated by subtracting total variable cost from total cost, thus:

Total Fixed Cost = y2 bx2 = y1 bx1

We have,
at highest activity: x2 = 3650; y2 = $951
at lowest activity: x1 = 2550; y1 = $775

Variable Cost per mile driven = ($951 $775) ÷ (3650 2550)   

                                     = $176/1100 miles =$.16 per mile

Total Fixed Cost = $951 ($.16 × 3650) = $951 – $584 =$367

2)-

Variable Cost per Unit =Y2-Y1/X2-X1