the aggregate monthly expenditure of a family was rs.6240,during the first three months, rs.6780 during the next four months and rs.7236 during last mnths of a year. if total saving during the year is rs.7080, find average monthly income of the family.

Dear Student ,
Please find below the solution to the asked query :

Total expenditure during first three months = 3×6240=Rs. 18720Total expenditure during next four months = 4×6780=Rs. 27120Total expenditure during next five months = 5×7236=Rs. 36180Total income of the family=18720+27120+36180+7080=89100Average mothly income of the family =8910012=Rs. 7425    ANS...
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