Question

A man is thrice as old as his son. Six years ago the man was four times as old as his
son. Their present age difference is

Answer 1

Answer:

the difference of age 6×4 = 24

so the answer is 24 years

Answer 2

Answer:

6 years ago..

let son's age be x

then man's age is y and its 4 times

y=4x----1

after 6 years, man's age is 3 times

y+6=3(x+6)

in this equation I put y's value as 4x from 1st equation

4x+6=3x+18

4x-3x=18-6

(x=12)

after 6 years

son'age=18 years

father's age=54 years

you can put in equation and check

Thanks