Question

The ages of Ram and Rahim are in the ratio 4: 7. If Rahim's age is 21 years, then find
the age of Ram .​

Answer 1

Ram's age : Rahim's age = 4:7

Rahim's age = 21 yrs.

So, let Ram's age be x yrs.

According to condition,

4:7 = x:21

or, 4/7 = x/21

or, 7x = 21×4 (by cross multiplication)

or, 7x = 84

or, x = 84÷7

or, x = 12

Ram's age = x yrs = 12 yrs.

Hence, the age of Ram is 12 years.