Question
The average weight of 40 students of a school is 52 kg.
If the weight of the teacher is included, the average weight rises by 500 grams. Find the weight (in kg) of the teacher.Solution
The average weight of 40 students =52kg. Total weight =2080kg. After the teacher includes total weight =41×52.5 =2152.5 Age of teacher =2152.5-2080 =72.5kg.
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