1. A discount series of 15%, 20% and 25% is equal to the single discount of?
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By: anil on 05 May 2019 01.50 am
Let list price = Rs. $$100x$$ After first discount of 15%, price = $$100x imes frac{85}{100}=85x$$ After second discount of 20%, price = $$85x imes frac{80}{100}=68x$$
After third discount of 25%, price = $$68x imes frac{75}{100}=51x$$
=> Equivalent discount = $$frac{100x-51x}{100x} imes 100$$ = $$49\%$$ => Ans - (B)
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After third discount of 25%, price = $$68x imes frac{75}{100}=51x$$
=> Equivalent discount = $$frac{100x-51x}{100x} imes 100$$ = $$49\%$$ => Ans - (B)