The population of a town is $32000$. It increases $15\%$ annually. What will it be in $2$ years?

$60 = ? \% \text{ of } 400$

$40 \%$ of $1640 + ? = 35 \%$ of $980 + 150 \%$ of $850$

If a number is $20 \%$ more than the other,how much per cent is the second number less than the first?

$A$ sum of $Rs$ $7,930$ is divided into $3$ parts and given on loan at $5 \%$ simple interest to $A, B$ and $C$ for $2, 3$ and $4$ years respectively. If the amounts (principal + interest) of all three are equal after their respective periods of loan,then the amount $A$ received as a loan is:

Two numbers are respectively $20 \%$ and $30 \%$ less than a third number. What is the second number as a percentage of the first?