skillrack Exam Numerical Ability Averages

The average weight of 8 boxers is increased by 1.5kg. When the boxer whose weight is 65kg is replaced by a new boxer, what is the weight of new boxer?

Read Solution (Total 2)

77 kg.

Let the average weight of 8 boxers was 'x' kg.
When a boxer of weight 65 kg. is replaced by a new boxer of 'y' kg, then
New average= (8x - 65+y)/8 = x+1.5
=> 8x -65+y = 8x+12
=> y=77
8 years agoHelpfull: Yes(1) No(0)

ans:72
total weight=8*1.5=12
therefore the new boxer weight is=65+12=72
7 years agoHelpfull: Yes(0) No(0)

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int index=0;
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