Runners lapping

Two runners run on a 3200 m oval track, one running at 12 km/h and the other at 8 km/h. How long does it take for the first runner to finish the second one?

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You need to know the following knowledge to solve this word math problem:

Units of physical quantities

velocity
length

themes, topics

motion problems
fundamentals of Physics

Grade of the word problem

practice for 12 year olds
practice for 13 year olds

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