Monthly average exenditure of a family with 4 member is rs 2800 find monthly average of a family with 3 member
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2800/4 = 700
700 is the cost for each member
700*4=2800
So the monthly average of a family with 3 members 700*3=2100
700 is the cost for each member
700*4=2800
So the monthly average of a family with 3 members 700*3=2100
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