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a new student having weight 47 kg join a class of 41 students & avg weight of class is reduced by 1.5kg.what is the new avg weight of the class?
a new student having weight 47 kg join a class of 41 students & avg weight of class is reduced by 1.5kg.what is the new avg weight of the class?
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Answer
61.5
41 ka X
42 ka x -1.5
cross multiply then cancel out u get x as 61.5 + 47 which is 108.5
