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1. Rakesh yadav buys an article with a discount of 25% on its marked price. He makes a profit of 10% by selling it at Rs. 660. The marked price of the article was ?

A. Rs. 600

B. Rs. 700

C. Rs. 800

D. Rs. 685

Solution:

Selling price of an article = Rs. 660

\begin{aligned} Cost price of an article \\ = 660 \times \frac{100}{110} \\ = Rs . 600 \\ Marked price of an article \\ = 600 \times \frac{100}{75} \\ = Rs . 800 \end{aligned}

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