Question

The total revenue in Rupees received from the sale of x units of a product is given by R(x)=3x²+36x+5.The marginal revenue, when x =15 is

(A) 116        (B) 96      (C) 90     (D) 126

Answer 1

Marginal revenue is the rate of change of total revenue with respect to the number of units sold.

MR = 6(15) + 36 = 90 + 36 = 126
Hence, the required marginal revenue is Rs126.
The correct answer is D.