Q18 of 168 Page 197

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

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


Then,


So, when x = 15 then,


MR = 6(15) + 36 = 126


Therefore, the marginal revenue when x = 15 is Rs. 126.

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