$? \times 15 = 37.5 \%$ of $220$

$45 \%$ of $1500 + 35 \%$ of $1700 = ? \%$ of $3175$

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

In an examination in which full marks were $800,$ $A$ gets $20 \%$ more than $B,$ $B$ gets $20 \%$ more than $C,$ and $C$ gets $15 \%$ less than $D.$ If $A$ got $576,$ what percentage of full marks did $D$ get (approximately) (in $\%$)?

$x$ is $30 \%$ more than $y$ and $25 \%$ less than $z$. If the value of $y$ is $₹ 300$,then what is the value (in $₹$) of $z$?

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