Question

in a group of 30 boys. Their average weight is 30 kg. When a boy join the group, the average weight is increased by 0.5 kg. The weight of the boy who joined the group is...

a) 30.5 kg
b) 35.2 kg
c) 40 kg
d) none of the above ​

Answer 1

Answer:

ANSWER : 30.5 KG

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