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1. A single discount of 50% on an article costing Rs. 10000 is better than two successive discounts of 40% and 10% by = ?

A. Rs. 400

B. Rs. 1000

C. Rs. 500

D. Rs. 600

Solution:

\begin{aligned} Single discount  =  50 % \\ Two successive discount \\ =  40 + 10 - \frac{40 \times 10}{100} \\ = 50 - 4 \\ = 46 \\ Difference \\ = 50 - 46 \\ = 4 % \\ Difference amount \\ =  4 % of 10000 \\ = \frac{4}{100} \times 10000 \\ =  Rs . 400 \end{aligned}

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