$A$ man spends $75 \%$ of his income. His income is increased by $20 \%$ and he increases his expenditure by $10 \%$. By what percentage does his saving increase (in $\%$)?

What is $15$ percent of $ 34$?

Ramola's monthly income is three times Ravina's monthly income. Ravina's monthly income is $15\%$ more than Ruchira's monthly income. Ruchira's monthly income is $₹ 32,000$. What is Ramola's annual income?

If the price of apples goes down by $10 \%,$ find the percentage of increase that a family should effect in its consumption so as not to increase expenditure on this account.

Two tailors $X$ and $Y$ are paid a total of ₹ $550$ per week by their employer. If $X$ is paid $120$ percent of the sum paid to $Y$,how much is $Y$ paid per week?

Ram donated $4 \%$ of his income to a charity and deposited $10 \%$ of the rest in a bank. If now he has $Rs$ $8640$ left with him,then his income is