Mitch + Annie + Fatty = 42 M + 2M + (2M-3) = 42 5M = 42 + 3 = 45 M = 45/5 = 9. ANSWER. 9 years (Mitch); 18 years (Annie), and 18-3 = 15 (Fatty)
PERSON AGE Fatty 2M-3 Annie 2M Mitch M SUM 42