# 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 :$\mathrm{Total}\mathrm{expenditure}\mathrm{during}\mathrm{first}\mathrm{three}\mathrm{months}=3\times 6240=\mathrm{Rs}.18720\phantom{\rule{0ex}{0ex}}\mathrm{Total}\mathrm{expenditure}\mathrm{during}\mathrm{next}\mathrm{four}\mathrm{months}=4\times 6780=\mathrm{Rs}.27120\phantom{\rule{0ex}{0ex}}\mathrm{Total}\mathrm{expenditure}\mathrm{during}\mathrm{next}\mathrm{five}\mathrm{months}=5\times 7236=\mathrm{Rs}.36180\phantom{\rule{0ex}{0ex}}\mathrm{Total}\mathrm{income}\mathrm{of}\mathrm{the}\mathrm{family}=18720+27120+36180+7080\phantom{\rule{0ex}{0ex}}=89100\phantom{\rule{0ex}{0ex}}\mathrm{Average}\mathrm{mothly}\mathrm{income}\mathrm{of}\mathrm{the}\mathrm{family}=\frac{89100}{12}=\mathrm{Rs}.7425\mathrm{ANS}...$

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