SOLUTION: How many gallons of gasoline that is 6% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 4% ethanol

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Question 465183: How many gallons of gasoline that is 6% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 4% ethanol
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How many gallons of gasoline that is 6% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 4% ethanol
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Equation:
eth + eth = eth
0.06x + 0*2000 = 0.04(x+2000)
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Multiply thru by 100 to get:
6x + 0 = 4x+4*2000
2x = 8000
x = 4000 gallons (amt. of 6% mixture needed)
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Cheers,
Stan H.
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