RPH Editorial Team Solutions for Exercise 1: EXERCISE

What will come in place of question mark (?) in the following question?

$10\%$ of $?=0.101$

Solve,

$\frac{20\mathrm{\%}\hspace{0.17em}\mathrm{of} 740}{?}=1036$

What will come in the place of question mark (?) in the following question?

$12\%$ of $200=?$

The tax on a commodity is diminished by $10\%$, and its consumption increased by $10\%$. The effect on the revenue derived from it is _____.

A reduction of $20\%$ in the price of coffee enables a purchaser to obtain $4 kg$ more for $Rs. 80$. The reduced price per $kg$ of coffee is?

A student has to secure $40\%$ marks to get through. If he gets $40$ marks and failed by $40$ marks, find the maximum marks set for the examination?

Due to an increase of $40\%$ in the price of a radio, sales reduced by $60\%$, then how much percentage increase or decrease will be in income?

If the length of a rectangle is decreased by $40\%$ and the breadth is increased by $30\%$, then what is increase or decrease percent in the area of the rectangle?