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20×48=960
960+60+58=1078
1078÷22=49
960+60+58=1078
1078÷22=49
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Total number of students initially =20
Mean weight of students initially =48kg
So total weights of 20 students = 20×48=960
2 students of weights 60 and 58 kg joins respectively.
Now total number of students =20+2=22
Total weight of the class = 960+60+58 =1078 kg
Thus, final mean weight of class = 1078/22 = 49 kg ans.
Hope this is ur required answer.
Mean weight of students initially =48kg
So total weights of 20 students = 20×48=960
2 students of weights 60 and 58 kg joins respectively.
Now total number of students =20+2=22
Total weight of the class = 960+60+58 =1078 kg
Thus, final mean weight of class = 1078/22 = 49 kg ans.
Hope this is ur required answer.
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