Total the ages of Apple and Benny is 38.
Seven years ago, Apple was three times as old as Benny. How old Benny`s present age?
Now:
Benny ---- x years
Apple ---- 38-x
6 years ago:
Benny ---- x-7
Apple ----- 38-x - 7 = 31-x
31-x = 3(x-7)
solve for x, and sub into my definitions