Question

The ratio between Mira’s expenditure and savings are 3$:$2. After her promotion, her income increases by 10$\%$ but her expenditure also increases by 12$\%$. By what percentage does her savings increase?

• A. 7
• B. 13
• C. 15
• D. None of these

Answer 1

The correct option is A

7

We get two values of x, 7 and 13. But to get a viable answer, we must keep in mind that the central value (10) must lie between x and 12. Thus the value of x should be 7 and not 13.

$\therefore \text{Required}\%\text{increase in savings}=7\%$