A boy, a girl and a dog go for a 38 mile journey. The girl takes 16 minutes to walk a mile. The boy takes 15 minutes to walk a mile and the dog can trot a mile in 10 minutes. They also have a bicycle which only one of them (including the dog!) can use at a time. When riding, the girl can travel a mile in 6 minutes, the boy can travel a mile in 5 minutes and the dog can pedal a mile in 4 minutes (what a marvelous dog!). What is the shortest time in which all three can complete the trip?

Credit for problem goes to Dr. Kevin Wang (not sure if it’s *by* him or not).

Good luck. Post solutions as blog post or comment.

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