Question

Mona’s father is three times as old as Mona. After 12 years, his age will be twice that of his daughter. Find their present age?

Answer 1

Answer:

let the age of mona is x.

then according to the question mona's father is 3 times as old as mona .

so her father's age is 3x.

after 12 year the age of mona is x+12

and the age of her father is 3x+12

given that

After 12 years his age will be twice that of his daughter.

that is

3x+12=2(x+12)

=>3x+12=2x+24

=>3x-2x=24-12

=>x=12

so present age of mona is x =12 years

and her father is 3x=3×12=36 years