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Mathematics 20 Online
OpenStudy (anonymous):

Will takes off on his weekly bike trip pedaling 12 km/h. One hour later, Andrew leaves from the same place pedaling 18 km/h. How long will it take Andrew to catch Will?

OpenStudy (whpalmer4):

How much of a head start does Will get riding for 1 hour at 12 km/h? Once both are riding, how many hours will it take for the difference in their speeds to erase that head start?

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