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September 2, 2014

September 2, 2014

Posted by **Anonymous** on Tuesday, November 22, 2011 at 4:18pm.

- physics -
**drwls**, Tuesday, November 22, 2011 at 5:00pmMultiply the 40 mph cost (2.40/hr) by (60/40)^2.

The cost per mile will decrease by a smaller factor (3/2), since the car goes farther per mile.

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