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A Boy, a Girl, a Dog, and a Bicycle (Posted on 2004-02-03) Difficulty: 3 of 5
A boy, a girl and a dog go for a 10 mile walk. The boy and girl can walk at 2 mph and the dog can trot at 4 mph.

They also have a bicycle which only one of them (including the dog!) can use at a time.
When riding, the boy and girl can travel at 12 mph while the dog can pedal at 16 mph.

What is the shortest time in which all three can complete the trip?

See The Solution Submitted by DJ    
Rating: 4.1818 (11 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): solution | Comment 14 of 26 |
(In reply to re: solution by SilverKnight)

That is funny. I am LOL at myself now that you've brought it up. But it didn't feel like cheating!

Seriously, although math was used to set up the problem and to play out the solution, creativity is what "solved" the problem.
  Posted by dave domingo on 2004-02-04 12:48:31

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