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

If $8 \%$ of the people eligible to vote are between $18$ and $21$ years of age,and in an election,$85 \%$ of those eligible to vote who were between $18$ and $21$ years of age actually voted,then the number of persons between $18$ and $21$ years of age who actually voted is what percent of the total people eligible to vote?

If $x$ is $80 \%$ of $y$,then what percent of $2x$ is $y$?

The population of a city increases at the rate of $10 \%$ annually. Its present population is $90.51$ lacs. The population $3$ years ago was nearly:

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

The present population of a town is $26010$. It increases annually at the rate of $2\%$. What was the population of the town two years ago?