Question 10
Sudhir purchased a chair with three successive discounts of 20%, 12.5% and 5%. The equivalent single discount is:
Solution
We will use the successive discount formula to calculate the overall discount.
Overall discount after giving a discount of 20% and 5% = $$20+5-\frac{20\times\ 5}{100}=25-1\ =24\%$$.
Now, we give another discount of 12.5% to get an overall discount of:
$$24\ +\ 12.5-\frac{24\times\ 12.5}{100}=33.5\%$$ i.e. Option A.
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