Maths Three taps A, B and C can fill a cistern in 6 hours, they are opened together in the empty tank, after 2 hours C is closed and A and B fill the remaining part in 7 hours Empty by C alone How long will it take to fill the tank?
| Q.201516: Three taps A, B and C can fill a cistern in 6 hours, they are opened together in the empty tank, after 2 hours C is closed and A and B fill the remaining part in 7 hours Empty by C alone How long will it take to fill the tank? |
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