Six pipes are required to fill a tank in 1 hour 45 minutes. How long will it take if only three pipes of the same type are used?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 3 h 30 min.
6 pipes = 105 min
1 pipe = 630 min
3 pipes = 210 min = 3 h 30 min