the mean weight of class of 34 students is 4.6 kg if the weight of the new boy is included the mean is rise by 500 g find the weight of the new boy
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Answer:
Your answers is given below
Now Average Weight Of Class = 46.5 kg
Now Average Weight = Total Weight/Number
46.5 = Total Weight/34
Total Weight = 46.5*34 = 1581
Now If Teacher Is Included
Let Weight Of Techer Be x kg
Now
Total Weight = 1581+x
Now Number = 35
Average Weight = 46.5+0.5 = 47
So
1581+x/35 = 47
1581+x = 1645
x = 64
So Weight Of Teacher Is 64 Kg
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