F5 Mathematics?
2016-09-11 12:54 pm
1. There are taps A and B to fill up a tank with water. It takes 25 minutes longer to fill up the tank with tap A alone for 20 minutes, then tap B is turned on alone for 20 minutes and then they are turned on together for 10 minutes, the tank will be full. Find the time taken for both tap A and B alone to fill up the tank.
回答 (1)
2016-09-12 10:42 am
收錄日期: 2021-05-01 00:06:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160911045435AAHn9LP