Four people start on one side to cross a wobbly bridge. 17 minutes to complete. One candle, nighttime. Only two people may cross the bridge. Torches are required for passage. The torch must be carried, not thrown. The first person crosses the bridge in one minute, the second in two, the third in five, and the fourth in ten. Pairs must walk at the slower tempo. Specify a problem-solving algorithm.

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Four people start on one side to cross a wobbly bridge. 17 minutes to complete. One candle, nighttime. Only two people may cross the bridge. Torches are required for passage. The torch must be carried, not thrown. The first person crosses the bridge in one minute, the second in two, the third in five, and the fourth in ten. Pairs must walk at the slower tempo. Specify a problem-solving algorithm.

 

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