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Jack enters a lift on the 24th floor, which is going up @ 51 floors/minute..........At what floor will they be together?

+1 vote
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Jack enters a lift on the 24th floor, which is going up @ 51 floors/minute speed.
At the same time Jill enters another lift on the 246th floor, which is going down @ 60 floors/minute speed.
At what floor will they be together?

posted Apr 5 by Sidharth Malhotra

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2 Answers

0 votes

126


They will meet after (246-24)/(51+60)=2 mins
They will be at floor 24+51*2=246-60*2=126

answer Apr 5 by Hanifa Mammadov
0 votes

Let X be the floor at which Jack and Jill will be together.
The time to reach the X floor is going to be the same for both elevators, then we can write the following equation;
(X - 24) / 51 = ( 246 - X) / 60
Solving this equation, it gives X = 126th floor

answer Apr 8 by anonymous



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