Question

a man age is 42 years and his son's age is 12 years.After how many years will the man be thrice as old as his son​

Answer 1

The answer is when the son will be 15 and the dad will be 45 as 15*3=45

Answer 2

Step-by-step explanation:

let the year be X

Acc to Ques.

Father's age--) 42+X

Mother's age--) 12+X

So,

42+X=3(12+X)

42+x =36+3X

42-36=3x-x

6 =2x

X=6/2

X=3years