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?
A) 8000 gallons
B) 1,800 gallons
C) 5115 gallons
D) 4000 gallons

Question

Quizplus · Accepted Answer

To achieve a 4% ethanol mixture, let x be the gallons of 6% ethanol gasoline added. The equation is 0.06x = 0.04(x + 2000). Solving gives x = 4000 gallons.

How Many Gallons of Gasoline That Is 6% Ethanol Must