You drive a car that runs on ethanol and gas. You have a 20-gallon tank to fill and you can buy fuel that is either 25 percent ethanol or 85 percent ethanol. How much of each type of fuel should you buy to fill your tank so that it is 50 percent ethanol?

Question

neonumbrella5115 · Answer

Do you have answer choices?  Have you tried anything yet?

anonymous · Answer

Its a Solving Systems Using Elimination Problem.

neonumbrella5115 · Answer

Try setting up two equations to use elimination on.  Post what equations you make.