Two discounts of 40 % and 20 % equal to a single discount of % ?

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7.Profit and Loss

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Two discounts of $40 \%$ and $20 \%$ equal to a single discount of $\%$?

A

$48$

B

$53$

C

$52$

D

$60$

Solution

Using net discount formula

$\Rightarrow \quad\left[a+b-\frac{a b}{100}\right] \%$

Here, $a=40 \%, b=20 \%$

Applying both values in above formula:

$\Rightarrow \quad\left[40+20-\frac{40 \times 20}{100}\right] \%=52 \%$

Standard 13

Quantitative Aptitude

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