In an election,a candidate who gets $84 \%$ of the votes is elected by a majority of $476$ votes. What is the total number of votes polled?

In a school there are $250$ students,out of whom $12$ per cent are girls. Each girl's monthly fee is $₹ 450$ and each boy's monthly fee is $24$ per cent more than that of a girl. What is the total monthly fee of girls and boys together?

Rita invested $25 \%$ more than Sunil. Sunil invested $30 \%$ less than Abhinav who invested $Rs. 6000$. What is the respective ratio between the amount that Rita invested and the total amount invested by all of them together?

If the price of gold increases by $30 \%$,find by how much the quantity of ornaments must be reduced so that the expenditure may remain the same as before?

If $X = 600$ and $Y = 800$,then $X$ is how much percent less than $Y$?

The quantity of water needed to reduce $9 \ ml$ of shaving lotion containing $50 \%$ alcohol to a lotion containing $30 \%$ alcohol is: (in $ml$)