Question

A boy is now one-third as old as his father. Twelve years hence he will be half as old as his father.

Answer 1

Answer:

Step-by-step explanation:

let father's age = x years

   boy's age = y years

y = (1/3)x                      ......1

after 12 years

age of father = x + 12

age of boy = y + 12

y + 12 = (1/2)(x + 12)     .....2

x=3y from first equation, putting this in second equation

y+12 = (1/2)(3y+12)

2y+24 = 3y+12

y=12

x=3y=3×12=36

age of father 36 years

age of boy 12 years