Question

the ages of aryan and arjun are in the ratio 5:7 gour years later their ages will be in the ratio 3:4. find their ages

Answer 1

If their ages are x and y, then we have

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

Now just solve for x and y. It's easier if you get rid of the fractions first...