A, B and two from the first floor with an elevator ride on a high-rise buildings, elevators always 1.5m / s speed of uniform rise or fall, when confronted with the passengers to their floors to stay 4s only one other person to continue to send their own floor each layer-storey 3m, are known to their floors a used 12s, B to their floor with a 22s, asked A, B where both the floor?
甲、乙两人从一楼乘同一部电梯上一座高楼，电梯始终以1.5m/s的速度匀速上升或下降，每遇到乘客到自己的楼层只停留4s继续将另外一人送到自己的楼层，每层楼高3m，已知甲到自己的楼层用了12s，乙到自己的楼层用了22s，问甲、乙两人各到哪层楼？
A, B and two from the first floor with an elevator ride on a high-rise buildings, elevators always 1.5m / s speed of uniform rise or fall, when confronted with the passengers to their floors to stay 4s only one other person to continue to send their own floor each layer-storey 3m, are known to their floors a used 12s, B to their floor with a 22s, asked A, B where both the floor?
希望可以帮助到你，也不知道对不对。
Two people A and B take a same lift to go up a building, the lift always has a speed of 1.5m/s both in going up and down. Each time the passenger reaches his own floor, the lift only stops for 4 seconds and then carries on to send the other passenger. Each floor has a height of 3m. A reached his own floor in 12s, B reached his in 22s, which floor did A go to? How about B?
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