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1. A shopkeeper marks his goods 20% above his cost price and gives 15% discount on the marked price. His gain percent is = ?

A. 5%

B. 4%

C. 2%

D. 1%

Solution:

Let the cost price = Rs. 100

\begin{aligned} Market price \\ =  120 % of 100 \\ =  Rs . 120 \\ Selling price \\ =  85 % of 120 \\ = \frac{85}{100} \times 120 \\ =  Rs . 102 \\ Gain % = \frac{102 - 100}{100} \times 100 \\ = 2 % \end{aligned}

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