Question

The age of hari and Harry are in the ratio of 5:7 after four years from now their ages are in the ratio of 3:4 . What are their present age?

Answer 1

age of Hari= 5x
age of harry= 7x
ATQ
4 years later
5x+4
7x+4
now
5x+4=3
7x+4=4
now do cross multiply and put value of x and u receive ur answer

Answer 2

hari 5x yrs & Harry 7x yrs
after 4 yrs hari 5x+4 yrs
Harry 7x+4 yrs
therefore 5x+4 ÷ 7x+4 =3÷4
20x+16=21x+12
21x-20x=16-12
x=4
hari present age 20 & Harry 28