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5 elements below 25 from the set A are t...

5 elements below 25 from the set A are transferred to Set B, and 10 elements lying between 25 and 50 from the Set B are transferred to Set C and 15 elements above 50 from the Set C are transferred to Set A.
The maximum increase in the average of set :

A

(A) 39.8

B

(B) 50.5

C

(C) 71.2

D

can't be determind

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The correct Answer is:
B
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