Question

The ratio of the ages of Riya and Heena are 7:9. Nine
years ago , their ages were in the ratio of 2:3 . Find their
present ages.

Answer 1

Answer:

Let Riya's present age be 7x and Heena's pre sent age be 9x

9 years ago their ages were 7x-9 and 9x-9

(7x-9)/(9x-9)=2/3

(7x-9)/(3x-3)=2

7x-9=6x-6

x=3

Riya,,'s age =7x=7×3=21

Heena's age=9×3=27

Note: In all ratio sums there is a missing number which you have to find out.

In the present case it is :x