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There's a river, 5 people on one side that want to cross over, and a single boat. Only two people may go into the boat at the same time. Each person needs a different amount of time to cross the river, and the boat always moves with the speed of the slowest person in the boat. How can they cross over in 20 minutes?
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Software Developer

Interviewed at Cosylab

3.9
Sep 4, 2011

There's a river, 5 people on one side that want to cross over, and a single boat. Only two people may go into the boat at the same time. Each person needs a different amount of time to cross the river, and the boat always moves with the speed of the slowest person in the boat. How can they cross over in 20 minutes?

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