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1. Ramesh marks his goods 30% above cost price. If he sells the item for Rs. 910 afters allowing of 15% discount. Find his cost price ?

A. Rs. 823.5

B. Rs. 758

C. Rs. 814.2

D. Rs. 856.5

Solution:

\begin{matrix} \begin{matrix} Cost Price & Selling Price & Mark Price \\ 10_{\times 20} & 13_{\times 20} \\ 17_{\times 13} & 20_{\times 13} \end{matrix} \\ \bar{\underline{200 unit 221 unit 260 unit}} \end{matrix}

\begin{aligned} 221 unit \to 910 \\ 260 unit \to \frac{910}{221} \times 200 \\ = Rs 823 .50 \end{aligned}

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