In a club there are 12 wrestlers. When a wrestler whose weight is 90 kg leaves the club, he is replaced by a new wrestler then the average weight of this 12 member club increases by 0.75 kg. What is the weight (in kg) of the new wrestler who joined the club?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 99
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Understanding |
Application |
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In a club there are 12 wrestlers. When a wrestler whose weight is 90 kg leaves the club, he is replaced by a new wrestler then the average weight of this 12 member club increases by 0.75 kg. |
Suppose the average weight = X kg. And P is the weight of new wrestler. So, (12X – 90 + P) = (X + 0.75) × 12 P – 90 = 9 P = 99 Hence, Weight of the new wrestler who joined the club = 99 kg |