The average weight of a certain number of children in a group was 27 k – McqOptions

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1.	The average weight of a certain number of children in a group was 27 kg. if 12 students of average weight. 28.5 kg joined the group, then the average weight of all the children increased by 0.45 kg. The number of children, initially, in the group was:
A.	28
B.	23
C.	18
D.	13
Answer» B. 23

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