Question 615155
Paul is 33 years old.
 He's three times older than his brother Phil, was when Paul was the same age Phil is today.
 How old is Phil?
:
Let p = Phil's age
:
3(33-p) = 33
99 - 3p = 33
99 - 33 = 3p
66 = 3p
p = 66/3
p = 22 yrs is Phil's age
:
The difference in their ages is 11 yrs
11 yrs ago, Phil is 11, 3 time 11 = Paul's age