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September 18, 2014

September 18, 2014

Posted by **Kirstin** on Monday, January 10, 2011 at 5:39pm.

- algebra -
**Marth**, Monday, January 10, 2011 at 5:45pmJeffs car takes 20% less gas, so it gets 21/(1-0.2) miles per gallon.

To drive 570 miles at 21 miles per gallon requires 570/21 gallons.

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