Practicing Success
A pipe can fill a tank in 10 hours and another pipe can empty it in 12 hours. If both pipes are opened together, then in what time the tank will be filled? |
40 hours 50 hours 55 hours 60 hours |
60 hours |
Let the total capacity of tank = 60 ltr. (LCM of 10 and 12 hrs.) ATQ, |