Question

the ages of a amd b are in the rartio 4:3 eight years ago were in ratio 10:7 find there present age

Answer 1

let the present age of a and b be a and b respectively,

(a-8)/(b-8)=10/7 a/b=4/3 3a=4*36

7a-56=10b-80 3a=4b a=48

a=(10b-24)/7 3(10b-24)/7=4b

30b-72=28b

2b=72

b=36

so the present age of a and b is 48 and 36 respectively