The average monthly expenditure of a family for the first four months is Rs.2570

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Question

The average monthly expenditure of a family for the first four months is Rs.2570, for the next three months Rs.2490 and for the last five months Rs.3030. If the family saves Rs.5320 during the whole year, the average monthly income of the family during the year is

Options:

A . Rs.3580

B . Rs.3200

C . Rs.3185

D . Rs.3000

Answer: Option C
Answer: (c)Total annual expenditure of the family =Rs.(4 × 2570 + 3 × 2490 + 5 × 3030) =Rs.(10280 + 7470 + 15150) =Rs.32900 Total income =Rs.(32900 + 5320) =Rs.38220 ∴ Required average monthly income = $38220/12$ =Rs.3185

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