The average weight of a certain number of persons in a group was 75.5 – McqOptions

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1.	The average weight of a certain number of persons in a group was 75.5 kg. Later on, 4 persons weighing 72.6 kg. 74 kg, 73.4 kg and 70 kg joined the group. As a result, the average weight of all persons in the group reduced by 500 g. The number of persons in the group, initially, was:
A.	20
B.	16
C.	18
D.	24
Answer» B. 16

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