The mean weight of 60 students is 52.75 kg.if mean weight of 25 students is 51 kg then find mean weight of 3m students
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total weight of 60= 60*52.75=3165
total weight of 25=25*51=1275
total weight of remaining 35 students =3165 - 1275=1890
average of 35 students =1890/35=54
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