If $200 \%$ of a number is $90,$ then what is the $80 \%$ of that number?

Pradeep invested $20\%$ more than Mohit. Mohit invested $10\%$ less than Raghu. If the total sum of their investment is $₹ 17,880$,how much amount did Raghu invest?

If $20 \%$ of $a = b$,then $b \%$ of $20$ is the same as: (in $\%$ of $a$)

If $A$'s income is $25 \%$ less than that of $B$,then how much per cent is $B$'s income more than that of $A$?

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

If the given two numbers are respectively $7 \%$ and $28 \%$ of a third number,then what percentage is the first of the second?