Question 264105
"5 years ago sean was 3 times as old as his brother" ___ s - 5 = 3(b - 5) ___ s - 5 = 3b - 15


"today he is 2 times as old as his brother" ___ s = 2b


2b - 5 = 3b - 15 ___ 10 = b


s = 2b = 20