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The total revenue in Rupees received from the sale of $x$ units of a product is given by $R(x)=3 x^2+36 x+5$. The marginal revenue, when $x=15$ is
(a) 116
(b) 96
(c) 90
(d) 126
The total revenue in Rupees received from the sale of $x$ units of a product is given by $R(x)=3 x^2+36 x+5$. The marginal revenue, when $x=15$ is
(a) 116
(b) 96
(c) 90
(d) 126
Solution:
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Verified Answer
(d) $R(x)=3 x^2+36 x+5, M R=\frac{d R}{d x}=6 x+36$
At $x=15 ; \frac{\mathrm{dR}}{\mathrm{dx}}=6 \times 15+36=90+36=126$
At $x=15 ; \frac{\mathrm{dR}}{\mathrm{dx}}=6 \times 15+36=90+36=126$
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