How many liters of pure alcohol must be added to a 100-liter solution that is 20 percent alcohol in order to produce a solution that is 24 percent alcohol?
Choose the correct answer.
A) 7/2	B) 5	C) 20/3	D) 100/19	E) 39/4
20% Alcohol solution means; in the 100 liter solution, 20 liters of solution is alcohol and 80 liters other solvents.   If we addxliters of alcohol to the solution, the solution becomes100+xliters and alcohol, which was 20 liters, becomes 20+x liters.   According to the statement;   20+x = 24% of (100+x)   OR   20+x=(100+x)6/25   500+25x=600+6x   19x=100   x=100/19   Ans:100/19
<result>D</result>
How many liters of pure alcohol must be added to a 100-liter solution that is 20 percent alcohol in order to produce a solution that is 24 percent alcohol?