the mean weight of 21 students of a class 52kg. if the mean weight of first 11 students of the class is 50kg and that of the last 11 students is 54kg, the weight of the 11th student is ......
1) 52kg 2)48kg 3) 56kg 4)46kg
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answer me fast with explaination..........,,
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Answers
Answered by
2
21*52=1092
11*50+11*54=1142
11th's weight =1142-1092=52
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0
hey mate here is ur answer
the weight would be 52 kgs
hope it helped
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