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1. Charging 30% above its production cost a radio maker puts a label of Rs. 286 on a radio as is price. But at the time of selling it, he allows 10% discount on the labelled price. What will his gain be ?

A. Rs. 257.40

B. Rs. 254.40

C. Rs. 198

D. Rs. 37.40

Solution:

\begin{aligned} Cost of ratio \\ = \frac{286}{130} \times 100 \\ = Rs . 220 \\ Selling price of ratio \\ = 286 \times \frac{90}{100} \\ = Rs 257 .40 \\ Profit = 257.40 - 220 \\ = Rs 37 .40 \end{aligned}

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