The cost of production of an item is given as C=50x – 5x 2 + x 3 / 6 where 'x' is number of items to be produced. If the average cost and marginal…

CA Foundation · Quantitative Aptitude · PYQS · January 2026
The cost of production of an item is given as C=50x – 5x 2 + x 3 / 6 where 'x' is number of items to be produced. If the average cost and marginal cost are equal then, what quantity of items should be produced?
(A) A. 20
(B) B. 15
(C) C. 10
(D) D. 5

Suggested Answer and Working Notes:

Correct Answer: Option (B)

B. 15

Topics: Part-A: Business Mathematics

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