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Question 15 :
If the average weight of 10 person is 50 kg. 4
persons died and is replaced by a single
person of weight 70 kg. The new average
weight becomes 40 kg. Then find the average
weight of 4 person died.
(A) 62.5 kg (B) 72.5 kg (C) 82.5 kg (D) 92.5 kg
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