The average weight of all the students in a class was 45.5 kg. Later o – McqOptions

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1.	The average weight of all the students in a class was 45.5 kg. Later on 5 students weighing 44.6 kg 43.4 kg, 44 kg, 45.5 kg and 43.5 kg leave the class. As a result, the average weight of the remaining students increases by 500 g. What was the number of students in the class, initially?
A.	18
B.	20
C.	16
D.	21
Answer» B. 20

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