If a person weighing 40 kg leaves a group of 5 children and is replaced by a person weighing 55 kg, what will be the difference in the average weight?

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Question:

If a person weighing 40 kg leaves a group of 5 children and is replaced by a person weighing 55 kg, what will be the difference in the average weight?

A2

B1

C4

D3

Answer:

D. 3

Explanation:

Difference in average weight = (55 - 40)/5 = 15/5 = 3

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