SOLUTION: How many gallons of gasoline that is 8% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 6% ethanol?

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Question 182007: How many gallons of gasoline that is 8% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 6% ethanol?
Answer by checkley77(12844)   (Show Source): You can put this solution on YOUR website!
.08*2000=.06(2000+x)
160=120+.06x
-.06x=120-160
-.06x=-40
x=-40/-.06
x=666.56 gal. of gas with no ethanol.
Proof:
.08*200=.06(2000+666.67)
160=.06*2666.67
160~160

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