SOLUTION: After robbing a bank in Dodge City, a robber gallops off at 12 mi/h. 20 minutes later, the marshall leaves to pursue the robber at 15 mi/h. How long (in hours) does it take the mar

SOLUTION: After robbing a bank in Dodge City, a robber gallops off at 12 mi/h. 20 minutes later, the marshall leaves to pursue the robber at 15 mi/h. How long (in hours) does it take the mar

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Question 228822: After robbing a bank in Dodge City, a robber gallops off at 12 mi/h. 20 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?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
r is 4mi ahead
overtake at 3 mph
4/3=1 1/3 hr or 1 hr 20 min
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