SOLUTION: A person sets out from Boston and walks toward Portland at the rate of 3.0 km/h. Three hours afterward, a second person sets out from the same place and walks in the same direction

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Question 1023650: A person sets out from Boston and walks toward Portland at the rate of 3.0 km/h. Three hours afterward, a second person sets out from the same place and walks in the same direction at the rate of 4.0 km/h. How far from Boston will the second person overtake the first?

Answer by ikleyn(52851) About Me  (Show Source):
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.A person sets out from Boston and walks toward Portland at the rate of 3.0 km/h. Three hours afterward, a second person sets out from the same place and walks in the same direction at the rate of 4.0 km/h. How far from Boston will the second person overtake the first?
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36 km.