Question 21

Successive discounts of 10%, 20% will be equivalent to a single discount is

Solution
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successive discount of x% and y% = $$ (x + y - \frac{xy}{100})$$%

here x% = 10%

y% = 20%

required discount = $$ (20 + 10 - \frac{20 \times 10}{100}) $$%

                           = 28%

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