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Question

Find the single discount equivalent to two successive discounts of 20% and 10%.

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Solution

Let the marked price be Rs 100.Then, first discount on it =Rs 20Price after the first discount=Rs 100-20
=Rs.80
Second discount on it=10% of Rs 80
=Rs 80×10100=Rs 8

Price after the second discount=Rs.80-8
=Rs.72
Net selling price=Rs.72Single discount equivalent to given successive discounts=100-72%
=28%
The single discount equivalent to given successive discounts is 28%.

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