One number is $25 \%$ of another number. The larger number is $12$ more than the smaller. The larger number is

$P$ is $20\%$ more than $Q$ and $40\%$ less than $R$. If the value of $Q$ is $₹ 150$,then what is the value of $R$ (in $₹$)?

Amit donated $20\%$ of his income to a school and deposited $20\%$ of the remainder in his bank. If he has $₹ 12800$ now,what is the income (in $₹$) of Amit?

$45 \%$ of $1500 + 35 \%$ of $1700 = ? \%$ of $3175$

$75 \%$ of $480 = x \times 15$. Find the value of $x$.

The population of a town was $48600$. It increased by $25\%$ in the first year and decreased by $8\%$ in the second year. What will be the population of the town at the end of $2$ years?