Question 1048877

A father's age is thrice his son's age diminished by 15. The boys age is one half his mother. If the sum of their ages is 135, how old are they?
<pre>Let son's age be S
Then father's is: 3S - 15
Mother's is: 2S
We then get: S + 3S - 15 + 2S = 135
Solve to find S, the son's age.
Multiply S by 2 to get mother's age.
Subtract sum of son's and mother's ages from 135 to get father's.

It is that SIMPLE....nothing complex!!