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Math Riddle: A prison guard and his blood hound are chasing an escaped prisoner

April 20, 2009 in Riddles

A prison guard and his blood hound are chasing an escaped prisoner. the prisoner has a 10 mile head start but the guard is walking 1mph faster than the prisoner. The bloodhound is trained to run to the prisoner, then run back to the guard, then continue running back and forth between them. If the bloodhound runs 10 mph, how far does the bloodhound run before the guard finally catches up to the prisoner?
Yahoo!QA

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