0 0 votes The aggregate monthly expenditure of a family was $ 6240 during first 3 months, $ 6780 during next 4 months, and $7236 during last 5 months of a year. If total saving during the year is $ 7080. Find average monthly income of family? Calculus + – Alina 469 views answer comment Share Follow Print 0 reply Please log in or register to add a comment.