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gone-ot · 03-03-2012, 01:24 PM

...the $-spent to achieve $-saved in MPG, ie:

ROI = $-saved / $-spent

03-03-2012, 01:24 PM	#2 (permalink)
gone-ot ...beats walking... Join Date: Jul 2009 Location: . Posts: 6,190 Thanks: 179 Thanked 1,525 Times in 1,126 Posts	...the $-spent to achieve $-saved in MPG, ie: ROI = $-saved / $-spent