Question

the present ages of father and his son are in the ratio 3:1 .after 15 years hence ,the ratio of the ages of the father and his son will be 2:1 .their present ages in years are​

Answer 1

Answer:

22.5 and 7.5

Step-by-step explanation:

let the ages of father and son be 3x and 1x

after 15 years their ages will be 3x + 15 and 1x + 15,

given , that their new ration of ages is 2:1

 so,   3x+15          =      2

          1x+15                    1

=>    3x + 15 = 1x + 30

=> 3x-1x = 30-15

=> 2x = 15         =>  x = 7.5

so, their present ages are 3(7.5) and 1(7.5)  a

, is 22.5 and 7.5 years