hours and 6 hours respectively, and is emptied by a waste pipe C in 3 hours. When the cistern is half full, A and B are closed and C is opened; after an hour, B is turned on; after half an hour more, A is turned on. In what time after C is first opened, does the cistern become full ?
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Explanation:
hours and 6 hours respectively, and is emptied by a waste pipe C in 3 hours. When the cistern is half full, A and B are closed and C is opened; after an hour, B is turned on; after half an hour more, A is turned on. In what time after C is first opened, does the cistern become full ?