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

In two successive years,$80$ and $60$ students of a school appeared at the final examination,of which $60 \%$ and $80 \%$ passed respectively. The average rate of students passed (in percent) is

If $A$'s height is $40 \%$ less than that of $B$,how much percent is $B$'s height more than that of $A$?

Deepti invests $11 \%$ of her monthly salary,i.e.,$Rs. 5236$ in Fixed Deposits. Later she invests $19 \%$ of her monthly salary on Life Insurance Policies; also she invests another $7 \%$ of her monthly salary on Mutual Funds. What is the total annual amount invested by Deepti?

$A$ spider climbed $62 \frac{1}{2} \%$ of the height of the pole in one hour and in the next hour it covered $12 \frac{1}{2} \%$ of the remaining height. If the height of the pole is $192 \, m$,then the distance climbed in the second hour is:

Anil's monthly income is $30 \%$ more than Ashok's. Ashok's monthly income is $10 \%$ less than Manoj's. If the difference between the monthly income of Anil and Manoj is $₹ 1360$,what is the monthly income of Ashok?