Question

If ratio of present ages are 7:12 and two years before the ratio was 3:8 find present age

Answer 1

Answer:

let the ratio be 7xand 12x

two years ago the ratio become,

7x-2=3/12x-2=8

8(7x-2)=3(12x-2)

56x-16=36x-6

20x=10

x=1/2

so the present age would be,

7×1/2= 7/2 years

12×1/2=6years