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13 April, 00:24

It takes 6hrs longer to cross a channel in a ferryboat when one engine of the boat is usd alone than when a second engine is used alone. Using both engines, the ferryboat can make the crossing in 4hrs. How long would it take each engine, working alone, to power the ferryboat across the channel

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  1. 13 April, 00:31
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    I think it takes about 10 hours.

    I hope that answers your question.
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