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September 17, 2014

September 17, 2014

Posted by **Marcus** on Tuesday, June 7, 2011 at 2:01pm.

- geometry -
**Ms. Sue**, Tuesday, June 7, 2011 at 2:14pmSeconds in 1 hour = 60 * 60 = 3600

3,600 * 17.6 = 63,360 feet per hour.

5,280 = feet per mile

63,360 / 5280 = 12 miles per hour

90 / 12 = 7.5 hours

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