The average weight of 20 students in a class is decreased by 500 grams – McqOptions

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1.	The average weight of 20 students in a class is decreased by 500 grams when one of the students who weights 40 kg is replaced by a new boy. The weight of the new boy is
A.	35 kg
B.	40 kg
C.	30 kg
D.	50 kg
Answer» D. 50 kg

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