engineering recuitment UPCL AE (E&M) 2021 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
Two pipes can fill a tank in 10 and 12 hours respectively and a waste pipe can empty 7 gallons per hours. All three pipes working together can fill the tank in 8 hours. What is the volume of the tank?
1
120 gallon
2
100 gallon
3
180 gallon
4
160 gallon