If $30 \%$ students failed in English,$45 \%$ failed in Math,and $25 \%$ failed in both,then what is the percentage of students who passed in both subjects (in $\%$)?

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?

$0.15 \%$ of $33 \frac{1}{3} \%$ of $₹ 10000$ is

Rohit spends $40 \%$ of his salary on food,$20 \%$ on house rent,$10 \%$ on entertainment,and $10 \%$ on conveyance. If his savings at the end of a month are $₹ 1500$,then his monthly salary is:

In a test,a candidate secured $468$ marks out of maximum marks $A$. Had the maximum marks $A$ been converted to $700$,he would have secured $336$ marks. What was the maximum marks $A$ of the test?

Two numbers are $90 \%$ and $75 \%$ lesser than a third number. By what percentage should the first number be increased so that it becomes equal to the second number?