Question

The average weight of 10 men is decreased by 3 kg when one of them whose
weights 80kg is replaced by a new person. Find the weight of the new person​

Answer 1

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Answer 2

Answer:

50 kg

Step-by-step explanation:

let the avg wt =x

then sum of wt=10x

Now 80 kg man is replaced by y kg man

then total wt=10x-80+y

avg=(10x-80+y)/10 =x-3

10x-80+y=10x-30

y=80-30=50 kg