Question

The total revenue in rupees received from the sale of x units of a product is given by $R(x)=13{{x}^{2}}+26x+15$ . Then, the marginal revolution rupees, when $x=15$ is

• A. 116
• B. 126
• C. 136
• D. 416

Answer 1

Answer: (D)

416

Answer 2

Given, $R(x)=13{{x}^{2}}+26x+15$
Now, the marginal revenue
$=\frac{d}{dx}(R(x))$
$=\frac{d}{dx}(13{{x}^{2}}+26x+15)$
$=26x+26$
Therefore, marginal revenue at $(x=15)$
$=26\times 15+26$
$=390+26=416$