How many litres of pure acid are there in $8$ litres of a $20\%$ solution?

$88 \%$ of $370 + 24 \%$ of $210 - ? = 118$

The sum of the number of boys and girls in a school is $150$. If the number of boys is $x$,then the number of girls becomes $x\%$ of the total number of students. The number of boys is

If $35 \%$ of a number is $12$ less than $50 \%$ of that number,then the number is:

What per cent of a day is $3$ hours?

In my office,at least $50 \%$ of the people read an e-newspaper. Among those who read an e-newspaper,at most $25 \%$ read more than one e-paper. Only one of the following statements follows from the statements given below. Which one is it?