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Two inlet pipes A & C can fill a tank in 10 hours & 20 hours respectively, operating alone. Outlet pipe B can empty a full tank in 8 hours. Pipe A discharge milk. Whereas pipe C discharges water. The 3 pipes are opened in the order, A, C, C, B, C, A, B. i.e. only pipe A is opened for 1st hour, then only pipe C is opened for the 2nd hour and so on. This continues for 7 hours. Find the ratio of milk to water in the tank after 7 hours.1). 7 : 52). 5 : 73). 11 : 74). 7 : 11 |
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