engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) Quantitative Aptitude Time and Work Pipe and Cistern
Two pipes X and Y alone can fill an empty tank in 105 minutes and 140 minutes respectively, pipe Z can empty at the rate of 4 gallons per minute. If pipes X, Y, and Z are opened together and they fill an empty tank in 84 minutes, then what is the capacity of the tank?
1
840 gallon
2
420 gallon
3
720 gallon
4
360 gallon