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© examsnet.com
Question : 29
Total: 40
The health coach of ABC school took weight measurements of 52 students of Class VI. The average weight of these students was 53 kg. After a few days, when a new boys joined, he again took the measurements and now found that the average got reduced to 51 kg. What is the weight of the new boy?
51 kg
52.5 kg
53 kg
53.5 kg
54 kg
Validate
Solution:
Total weight of 52 students = (52 × 53) kg = 2,756 kg
New total weight = (53 × 51) kg = 2,703 kg
∴ Weight of the new boy = (2,756 - 2,703) kg = 53 kg
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