if the total cost producing x units of a commodity given by C(x) = 1 / 3 x 3 + 2x 2 - 5x + 10, then the marginal cost when x= 5 is

CA Foundation · Quantitative Aptitude · MTP · January 2026
if the total cost producing x units of a commodity given by C(x) = 1 / 3 x 3 + 2x 2 - 5x + 10, then the marginal cost when x= 5 is
(A) A. ₹25
(B) B. ₹20
(C) C. ₹30
(D) D. ₹50

Suggested Answer and Working Notes:

Correct Answer: Option (B)

B. ₹20

Topics: Part-A: Business Mathematics

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