Maths Three taps A, B and C can fill a cistern in 12 hours, 15 hours and 20 hours respectively. If A remains open all the time and B and C are opened alternately for one hour, how much time will take to fill the tank?
| Q.201595: Three taps A, B and C can fill a cistern in 12 hours, 15 hours and 20 hours respectively. If A remains open all the time and B and C are opened alternately for one hour, how much time will take to fill the tank? |
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