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 an office,$40 \%$ of the staff is female,$70 \%$ of the female staff and $50 \%$ of the male staff are married. The percentage of the unmarried staff in the office is

If $x \%$ of $y$ is equal to $z,$ what per cent of $z$ is $x$ ?

The income of a company increases $20 \%$ per annum. If its income is $Rs$ $42664000$ in the year $1999$,what was its income in the year $1997$?

From the salary of an officer,$10 \%$ is deducted as house rent,$20 \%$ of the rest,he spends on conveyance,$20 \%$ of the rest he pays as income tax and $10 \%$ of the balance,he spends on clothes. If he is left with ₹ $15552$,find his total salary.

In Convent Model School,$60 \%$ of the students are boys. In an aptitude test,$80 \%$ of the girls scored more than $40$ marks (out of a maximum possible $150$ marks). If $60 \%$ of the total students scored more than $40$ marks in the same test,find the fraction of the boys who scored $40$ marks or less?