Question

If the ages of Hari and Harry are in the ratio 5 is to 7 four years from now the ratio of their ages will be 3:4 then the present age of Hari in years

Answer 1

Step-by-step explanation:

given that rotio of 5:7

let common ratio=x

then age of Hari =5x

and the age of harry =7x

by question

after four year age of

Hari=5x +4

& harry =7x+4

now

5x +4 = 3

7x +4 4

cross multiple

4(5x+4) = 3(7x+4)

20x+16 = 21x+12

20x -21 = 12-16

x = 4

Hence

age of Hari 5x

5×4 = 20

age of harry 7x

7×4 = 28