The cost function of a company is given by C(x) = 600x – 10x 2 + x 3 / 2 where x denotes the output. Find the level of output (in nearest integer)…

CA Foundation · Quantitative Aptitude · PYQS · January 2026
The cost function of a company is given by C(x) = 600x – 10x 2 + x 3 / 2 where x denotes the output. Find the level of output (in nearest integer) at which average cost is minimum.
(A) A. x = 8
(B) B. x = 9
(C) C. x = 10
(D) D. x = 11

Suggested Answer and Working Notes:

Correct Answer: Option (C)

C. x = 10

Topics: Part-A: Business Mathematics

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