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1. A person paid Rs. 17000 for a motor-car after a single discount of 15%. If he is given successive discount of 5% and 10% then how much he would pay ?

A. Rs. 17000

B. Rs. 17010

C. Rs. 17100

D. Rs. 18900

Solution:

Cost price of motor-car = Rs. 17000
Mark price of motor-car

\begin{aligned} = Rs . 17000 \times \frac{100}{85} \\ = Rs . 20000 \end{aligned}

After successive discount,Cost price

\begin{aligned} = Rs . 20000 \times \frac{95}{100} \times \frac{90}{100} \\ = Rs . 17100 \end{aligned}

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