M = Max (M-3) = Christine 3*(M-3) = Angel M + (M-3) + 3*(M-3) = 28 (total age) M + M - 3 + 3M - 9 = 28 5M - 12 = 28 5M = 28 + 12 5M = 40 M = 40/5 = 8. ANSWER. Max is 8 years old.