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| 1. |
Three taps A, B and C can fill an overhead tank in 6 hours, 8 hours and 12 hours respectively. How long would the three taps take to fill the empty tank, if all of them areopened together? |
| Answer» WORK done by A in 1 hours=1/6 work done by B in 1 hours=1/8 work done by C in 1 hours=1/12 total time=1/6+1/8+1/12 =8/48+6/48+4/48 =18/48 =48/18 =2.667 hours | |