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

$0.01$ is what percent of $0.1$?

$23 \% \text{ of } 6783 + 57 \% \text{ of } 8431 = ?$

The value of a machine depreciates at the rate of $10 \%$ every year. It was purchased $3$ years ago. If its present value is $₹ 8748$,what was its purchase price?

The population of a town is $9000$. If the number of females increases by $5 \%$ and the males by $7.5 \%$,what will be the total population after the increase? The number of females currently is $3000$.

What percent of $7.2 \,kg$ is $18 \,g$?