R S Aggarwal Solutions for Chapter: Linear Equations in One Variable, Exercise 3: EXERCISE 7C

On adding $9$to the twice of a whole number gives$31$. The whole number is
 

Thrice a number when increased by$6$ gives $24$. The number is

$\frac{2}{3}$ of a number is less than the original number by $10.$ The original number is

Two complementary angles differ by $10°$. The larger angle is

Two supplementary angles differ by $20°$. The smaller of the two measures

The ages of $\mathrm{A} \mathrm{and} \mathrm{B}$ are in the ratio $5:3$. After$6$ years, their ages will be in the ratio$7:5$. The present age of $\mathrm{A}$ is

A number when multiplied by $5$ is increased by $80$. The number is

The length of a rectangle is three times its width and its perimeter is $96 \mathrm{m}$. The length is