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Shane's mother's average speed is 6.7 MPH.

10 miles/ 90 minutes = 1/9 miles/minute

60 minute/hour

1/9 miles/minute x 60 minutes/hour = 6 2/3 miles/hours

6.7 mph

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โˆ™ 2015-01-07 11:44:47
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Q: Shane's mother is training for a marathon On Saturday she does a 10 mile run in 90 minutes What is her average speed in miles per hour?
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