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posted by James Tuesday, October 23, 2012 at 11:14pm.
If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?
1 hr = 60 min * 60 sec/min = 3600 s 73.2 s = 73.2 s / (3600 s/h) = 0.0233 hr 4mi / 0.0233 hr = 196.7 mi/h
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