Jack enters a lift on the 25th floor, which is going up @ 56 floor/min speed. At the same time Jill enters another lift on the 70th floor which is going down @ 64 floor/min speed. At what floor will they be together?
Let's stop Jack's elevator at the 25th floor and add its speed to Jill's elevator ==> 56 + 64 = 120 floors/min. Now Jill will travel 70 - 25 floors = 45 floors @ 120 floors/min to reach Jack. ie., 45 × 60/120 = 22.5 seconds is how long it will take for them to reach the same level {(25 + (56×22.5/60)) = 46th floor}.
Jack enters a lift on the 10th floor, which is going up @ 53 floors/min speed. At the same time Jill enters another lift on the 370th floor which is going down @ 67 floors/min speed. At what floor will they be together?
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?
An elevator held 13 people and was going to the 25th floor in a building. Suddenly, the elevator's wire broke and the elevator dropped 25 floors down. But all 13 people in the elevator didn't get injured. What happened to them?
