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CA Intermediate · Cost and Management Accounting · Introduction to Cost and Management Accounting

Sharma Plastics produces 8,000 units in a month. Total cost at 8,000 units is Rs 2,60,000 and at 10,000 units is Rs 3,00,000. Assuming a linear semi-variable cost behaviour, what is the monthly fixed cost?

The monthly fixed cost is Rs 1,00,000. The change in total cost of Rs 40,000 over a change of 2,000 units gives a variable cost of Rs 20 per unit. Deducting variable cost of Rs 1,60,000 at 8,000 units from the total of Rs 2,60,000 leaves the fixed cost.

  1. ARs 1,00,000
  2. BRs 1,20,000Correct
  3. CRs 1,40,000
  4. DRs 40,000

Explanation

Variable cost per unit = (3,00,000 - 2,60,000) / (10,000 - 8,000) = 40,000 / 2,000 = Rs 20. Variable cost at 8,000 units = Rs 1,60,000. Fixed cost = 2,60,000 - 1,60,000 = Rs 1,00,000. Check: 10,000 x 20 = 2,00,000; 3,00,000 - 2,00,000 = 1,00,000. So Rs 1,20,000 is wrong.

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