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The average weight of a class of 20 stud...

The average weight of a class of 20 students is 45 kgs.A new student whose weight is 40 kgs replace an old student of this class.Hence the average weight of the whole class decreases by 1 kg.the weight of the replace student is:

A

55 kgs

B

50 kgs

C

60 kgs

D

none of these

Text Solution

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The correct Answer is:
C
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