CSATRatio, Mixture & AveragesArithmetic Geometric Progression and Averages2017

Suppose the average weight of 9 persons is 50 kg. The average weight of the first 5 persons is 45 kg, whereas the average weight of the last 5 persons is 55 kg. Then the weight of the 5th person will be

A

45 kg

B

47.5 kg

C

50 kg

D

52.5 kg

Correct Answer: Option C

Explanation

We are given a group of 9 people with an average weight of 50 kg. We are looking for the weight of the 5th person, who

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