After robbing a bank in Dodge City, a robber gallops off at 14 mi/h. 30 minutes later, the marshall leaves to pursue the robber at 15 mi/h. How long (in hours) does it take the marshall to catch up to the robber?
A bit more than 7 hours is a rough estimate..
how did you get it?
robber = R marshall = M Robber gets 30 minute head start, which @ 14 mph, is 7 miles. Therefore, if X is the distance.. 14X + 7 = 15X -14X -14X 7 = X So, it will take 7 hours. Which makes sense. He is 7 miles ahead, and the marshall is going 1 mile per hour faster.
the robber gallops... lol
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