average weight of 10 students is 45kg . if one students weighing 46kg is replaced by another students , the the New average is 45.5 kg . the weight of the new student is ?
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If the average weight of 10 students is 45 kg and if one students weighing 46 kg is replaced by another students , the new average is 45.5 kg, so, here are the calculation,
10 students =45,45,45,45,45,45,45,45,44,46
46 replaced by another then the new average is 45.5 kg
the new kilograms of 10 students are 45,45,45,45,45,45,45,45,44, then we add 51 to replace the 46 .
45+45+45+45+45+45+45+45+44+51=455
455/10=45.5 kg.
Therefore, the weight of the new student is 51 kg.
If the average weight of 10 students is 45 kg and if one students weighing 46 kg is replaced by another students , the new average is 45.5 kg, so, here are the calculation,
10 students =45,45,45,45,45,45,45,45,44,46
46 replaced by another then the new average is 45.5 kg
the new kilograms of 10 students are 45,45,45,45,45,45,45,45,44, then we add 51 to replace the 46 .
45+45+45+45+45+45+45+45+44+51=455
455/10=45.5 kg.
Therefore, the weight of the new student is 51 kg.
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