The cost function of an organisation as C(x) = 500-5x 2 + x 3 / 3 , where x denotes the output. Find the level of output at which marginal cost is…

CA Foundation · Quantitative Aptitude · PYQS · September 2025
The cost function of an organisation as C(x) = 500-5x 2 + x 3 / 3 , where x denotes the output. Find the level of output at which marginal cost is the minimum.
(A) A. 5
(B) B. 6
(C) C. 10
(D) D. 8

Suggested Answer and Working Notes:

Correct Answer: Option (A)

A. 5

Topics: Part-A: Business Mathematics

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