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The average weight of a class of 39 students is 40 kg. when a new student is admitted to the class, the averages decreases by 200 g. find the weight o

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The average weight of a class of 39 students is 40 kg. when a new student is admitted to the class, the averages decreases by 200 g. find the weight of the new student.
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Correct Answer - 32 kg
Total weight of 39 students = ` ( 40 xx 39) ` kg = 1560 kg .
Mean = (40 - 0.2 ) = 39.8 kg .
Total weight increased = `( 39.8 xx 40)` kg = 1592 kg
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