Problema Solution
A father is three times as old as his son ,in12 years time , he will be twice as old .
How old is the father now?
Answer provided by our tutors
let
x = the age of the father at the moment
y = the age of the son at the moment
a father is three times as old as his son
x = 3y
in 12 years time , he will be twice as old
x + 12 = 2(y + 12)
by solving the system of equations
x = 3y
x + 12 = 2(y + 12)
we find
x = 36 years
y = 12 years
click here to see the step by step solution of the system
The father is 36 years old now.