her brother --- x
Archie ------- x+12
four years from now:
brother = x+4
Archie = x+12 + 4 = x+16
x+4 = (2/3)(x+16)
solve for x and sub into original definitions
Archie is 12 years older than her brother Channie. Four years from now, Channie will be two-thirds as old as Archie. How old are they now?
1 answer