railway RRB ALP (CBT 1 + CBT 2 + CBAT) Mock Test Series 2025 (New) Quantitative Aptitude Time and Work Pipe and Cistern
Three pipes A, B, and C can fill a tank separately in 8h, 10h, and 20 h respectively. What is the time taken by all the three pipes together for filling a tank?
1
43/11 hours
2
30/11 hours
3
40/11 hours
4
45/11 hours