A 6-liter solution is 20% alcohol. How many liters of pure alcohol must be added to produce a solution that is 50% alcohol?
Choose the correct choice from the following options
A) 2.4	B) 2.7	C) 3.0	D) 3.3	E) 3.6
Let x be the amount of pure alcohol required.   0.2(6) + x = 0.5(x+6)   0.5x = 3 - 1.2   x = 3.6 liters   The answer is 3.6.
<result>E</result>
A 6-liter solution is 20% alcohol. How many liters of pure alcohol must be added to produce a solution that is 50% alcohol?