If $x$ is $90 \%$ of $y,$ then what per cent of $x$ is $y$?

The price of a shirt is increased by $15 \%$ and then reduced by $15 \%$. The final price of the shirt

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

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 $1240$?

One-fifth of a number is $62$. What will $73\%$ of that number be?

Two numbers are respectively $60 \%$ and $20 \%$ more than a third number. The second number expressed as a percentage of the first is: