engineering recuitment UPCL AE (E&M) 2021 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
2 pipes can fill a tank in 24 hours. After 5/6 of the tank is filled, 3 more similar pipes are opened. Find the total time to fill the tank now.
1
21 hours 36 minutes
2
21.4 hours
3
21.5 hours
4
15 hours 36 minutes