UP Police SI Exam 17 Nov 2021 Shift 1 Solved Paper

Question : 95 of 160

Marks: +1, -0

Pipe A can fill a tank in 155 minutes, Pipe B can fill the same tank in 93 minutes and Pipe C can empty the same tank in 62 minutes. If all three pipes are together, how many minutes will it take to fill the empty tank?