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6 pipes fill a tank in 120 minutes, then 5 pipes will fill it in (a) 100 min (b) 144 min (c) 140 min (c) 108 min |
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Answer» 6 pipes fill a tank in 120 minutes, then 5 pipes will fill it in (a) 100 min (b) 144 min (c) 140 min (c) 108 min |
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