# physics

It takes a runner 3 h, 36 min, 25 s to run a marathon. If the distance of a marathon is 42.2 km, what is the average speed of the runner?

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1. I assume you want km/hr

time = 3 + 36/60 + 25/3600 hours

speed = 42.2 / time

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2. 5555

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