The avergae of weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg.What might be the weight of new person?76 kgNone of these76.5 kg85 kg
Question
The avergae of weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg.What might be the weight of new person?76 kgNone of these76.5 kg85 kg
Solution
The average weight of 8 people increased by 2.5 kg when a new person replaced one of them who weighed 65 kg. This means the total weight increased by 2.5 kg * 8 people = 20 kg.
So, the new person must weigh 20 kg more than the person they replaced.
Therefore, the weight of the new person is 65 kg + 20 kg = 85 kg.
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