Two numbers are less than a third number by $30 \%$ and $37 \%$,respectively. How much per cent is the second number less than the first?

The price of rice has been increased by $20 \%$. By what per cent should Sanjay reduce the consumption of rice in the family so that the expenditure on rice remains the same as before the increase in the price of rice?

Nutan got $456$ marks in an exam. Aditya got $54 \%$ marks in the same exam,which is $24$ less than Nutan. The minimum passing marks in the exam is $35 \%$. How many marks did Nutan get more than the passing marks?

In the last financial year,a car company sold $41,800$ cars. In this year,the target is to sell $51,300$ cars. By what percent must the sale be increased?

If $A$'s salary is $30\%$ more than that of $B$,then by how much percent is $B$'s salary less than that of $A$ (in $\%$)?

For admission in a postgraduate program of Calcutta University,$90 \%$ of the candidates who appeared for the written test were males and the rest were females. $60 \%$ of the males and $80 \%$ of the females passed the written test. What is the total number of students who appeared for the written test,if the total number of passed candidates was $1240$?