Consider the following:
Three men want to cross a river, they find a boat, but it is a very small boat. It will only carry 200 pounds. The men are named Large (200 lbs), Medium (120 lbs), and Small (80 lbs). How can they all get across? They might have to make several trips in the boat (VanLehn, 1989).

Question

Quizplus · Accepted Answer

Medium and Small cross together first (200 lbs total), then Small returns (80 lbs), Large crosses alone (200 lbs), Medium returns (120 lbs), and finally, Medium and Small cross together again (200 lbs total). This sequence totals five trips.

Consider the Following: Three Men Want to Cross a River, They Find a They