Sharon has two solutions available in the lab, one solution with 6% alcohol and another with 11% alcohol. How much of each should she mix together to obtain 10 gallons of a solution that contains 7% alcohol?
8 gallons at 6%
2 gallons at 11%
Let the solution measure of 6% concentration be
Let the solution measure of 11% concentration be
For concentrations we have:
For volume we have: