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Question

There are 50 students in a class. One of them weighing 50 kg goes away and a new students joins. By this the average weight of the class increases by 12kg. The weight of the new student is

A
70 kg
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B
72 kg
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C
75 kg
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D
76 kg
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Solution

The correct option is C 75 kg
Total weight increase =12×50=25
weight of the new student is 50+25=75kg

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