The average weight of 20 students is 50 kg. If the teacher's weight is added, the average becomes 52 kg. Find the teacher's weight. MCQ with Answer and Explanation

Question

The average weight of 20 students is 50 kg. If the teacher's weight is added, the average becomes 52 kg. Find the teacher's weight.

A. 92 kg

B. 90 kg

C. 88 kg

D. 94 kg

Answer: Option A

Solution (By JKSSB Mock Tests)

Total weight of 20 = 20×50=1000. Total of 21 =21×52=1092. Teacher's weight =1092-1000=92.

This question belongs to: Maths Average

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Correct Answer: Option D

Explanation:
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Average of 15 numbers 1460. If average of 9 is 1455, average of remaining 6?

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