Question

Roger ran 13.2 miles in 1.6 hours. Ana ran 10.85 miles in 1.4 hours. Who had the faster average​ speed? How much​ faster? Explain.

help!

Answer 1

Roger, by 0.5mph

Explanation:

To work out speed, you need to do distance traveled divided by time.

Roger: 13.2 / 1.6 = 8.25mph

Ana: 10.85 / 1.4 = 7.75mph

Roger has a faster average speed.

8.25 - 7.75 = 0.5

He was faster by 0.5mph

Answer 2

Hey!

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Average Speed = Distance / Time

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Solve for Roger:

13.2 / 1.6 = 8.25mph.

Solve for Ana:

10.85 / 1.4 = 7.75mph.

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Now, we can see that Roger has the fastest average speed.

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Subtract:

8.25 - 7.75 = 0.5mph.

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Now, we can see that Roger was 0.5mph. faster then Ana.

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Hope This Helped! Good Luck!