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A steamer going upstream would cover the distance between town A and town B in 4 hours and 30 minutes. If the same steamer going downstream would cover the distance between the towns in 3 hours, how long would it take a raft moving at the speed of the current to float from town B to town A?
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A steamer going upstream would cover the distance between town A and town B in 4 hours and 30 minute...
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