Question
There are 48 students in a class. Their average weight
is 48 kg. When one student leaves the class, the average weight reduces by 200 grams. What is the weight of the student who left the class?Solution
New average = 48-0.2= 47.8 kg Weight of boy left = New average + Number of total boys x Average reduced = 47.8 + 48 × 0.2 = 47.8 + 9.6 = 57.4 kg
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