Q76 of 107 Page 104

1 subtracted from one–third of a number gives 1. Find the number.

Let the number be x. then, one–third of the number

⇒

⇒ x = 6 [multiply by 3 both sides]

Hence, the required number is 6.

Two times a number increased by 5 equals 9. Find the number.

9 added to twice a number gives 13. Find the number.

After 25 years, Rama will be 5 times as old as he is now. Find his present age.

After 20 years, Manoj will be 5 times as old as he is now. Find his present age.