Jharne De and Ranjana Kumar Solutions for Chapter: Introduction to Algebra, Exercise 1: Exercise

Monu is thrice as old as Sonu’s age. If sonu age is $x$ years, what is Monu’s age?

In a $2-$digit number, the digit at the tens place is double the digit at the ones place. If the digit at the ones place is $x,$ what is the digit at the tens place?

The difference of two numbers is $6$. If you write $x$ for the smaller number, how do you write the larger?

The length of a rectangle is $\left(a+b\right) \mathrm{c}\mathrm{m}$ and the breadth is $\left(a-b\right) \mathrm{c}\mathrm{m}$. If $b=28-2a$, where $a$ is the square of $5$, find the area of the rectangle