Question

The average weight of A, B, C and D is 40 kg. A new person E is also included in the group, then the
average weight of the group is increased by 1 kg. Again a new person F replaces A, then the new
average of 5 persons becomes 42. The average weight of B, C, D, F is:
(a) 42
(b) 41.25
(c) 42.5
(d) None of these​

Answer 1

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Answer 2

Answer:

none of this

Step-by-step explanation:

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