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A runner runs the first 400m of a race in 80s, the second 400m in 70s and the final 800m in 130s. What was her average speed for this run?

A runner runs the first 400m of a race in 80s, the second 400m in 70s and the final 800m in 130s. What was her average speed for this run?
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A runner runs the first 400m of a race in 80s, the second 400m in 70s and the final 800m in 130s. What was her average speed for this run?

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User Markwatson
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7.8k points

1 Answer

4 votes
The runners average speed would be 330 km/h for the run .
answered
User Jayson Tamayo
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8.4k points
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