The mean weight of a class of 35 students is 45kg.if the weight of the teacher be included the mean weight increases by 5oog.find the weight of the teacher
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Total weight of the students :
35 × 45 = 1575
The mean weight when the weight of the teacher is added :
45 + 500/1000 =45.5Kg
The total weight when the teacher's weight is added :
45.5 × 36 = 1638
Weight of the teacher :
1638 - 1575 = 63 Kg
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