Question

If $A^{\prime }$ s income is $30$ $\%$ less than $B^{\prime }$ s, then how much per cent is $B^{\prime }$ s income more than $A^{\prime }$ s?

• A. $42$ $\frac{6}{7}\%$
• B. $32$ $\frac{1}{10}\%$
• C. $30$ $\%$
• D. $40$ $\%$

Answer 1

The correct option is A $42$ $\frac{6}{7}\%$

Let $B^{\prime }s$ income be $100$

Then, $A^{\prime }s$ income $=100-30=70$

$\Rightarrow$ $\%$ $B^{\prime }s$ income more than $A^{\prime }s$ $=\frac{30}{70}\times 100\%$

$=42.857\%$

$=42\frac{6}{7}\%$