In a class,$70 \%$ of the students read Hindi,$40 \%$ of the students are boys,and $20 \%$ of the girls do not read Hindi. What percentage of boys read Hindi?

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?

If one number is $80 \%$ of the other and the sum of their squares is $656$,then the numbers are:

What percent of ₹ $2650$ is ₹ $1987.50$?

Two numbers are respectively $12 \frac{1}{2} \%$ and $25 \%$ more than a third number. The first number as a percentage of the second number is

Deepti invests $11 \%$ of her monthly salary,i.e.,$Rs. 5236$ in Fixed Deposits. Later she invests $19 \%$ of her monthly salary on Life Insurance Policies; also she invests another $7 \%$ of her monthly salary on Mutual Funds. What is the total annual amount invested by Deepti?