the average weight of a class of 40 students is 40 kg. if the weight of the te

Question

the average weight of a class of 40 students is 40 kg. if the weight of the teacher be included , the average weight increases by 500 gm . the weight of the teacher is ?

Options:

A . 54 kg

B . 60.5 kg

C . 65 kg

D . 68.5 kg

Answer: Option B
Explanation :

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