$15 \%$ of $10 \%$ of $20 \%$ of $1000$ is?

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?

On decreasing the price of a colour $TV$ by $30 \%$,its sale is increased by $20 \%$. The effect on the revenue is:

The population of a town is $32000$. It increases $15\%$ annually. What will it be in $2$ years?

An inspector rejects $0.08 \%$ of the meters as defective. How many will he examine to reject $2$?

$A$ housewife saved $₹ 2.50$ in buying an item on sale. If she spent $₹ 25$ for the item,approximately what percentage did she save in the transaction?