The average expenditure of 100 labourers if 20.if the average expenditure of 150 labourers is 25 calculate the average expenditure of remaining 50 labourers?
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Explanation:
the average expenditure of 100 labours=20
therefore the sum of expenditure=100*20=2000
now
the expenditure of 150 labours=25
therefore the sum of expenditure=150*25=3750
the average of 50 remaining labours=3750-2000=1750
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