SOLUTION: A dealer has 10,000 gallons of unleaded gasoline. He wants to add just enough ethanol to make the fuel a 10% ethanol mixture. How many gallons of ethanol should be added?

Question 611231: A dealer has 10,000 gallons of unleaded gasoline. He wants to add just enough ethanol to make the fuel a 10% ethanol mixture. How many gallons of ethanol should be added?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A dealer has 10,000 gallons of unleaded gasoline.
He wants to add just enough ethanol to make the fuel a 10% ethanol mixture.
How many gallons of ethanol should be added?
:
Let x = amt of ethanol
:
x = .10(x+10000)
x = .10x + 1000
x - .1x = 1000
.9x = 1000
x = 1000/.9
x = 1111.11 gal of ethanol required

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