How much water should be added to 12 liters of a 20%-solution of alcohol to reduce the concentration of alcohol in the solution by 75% ?
Choose the most appropriate option:	A) 28 liters	B) 27 liters	C) 30 liters	D) 32 liters	E) 35 liters
Let x ltr water to be added   2ltr alcohol to be represented as (20(1-3/4(new soln.=12+x)))   2=5%*(12+x)--------&gt;x=28   28 litersns 28 liters
<result>A</result>
How much water should be added to 12 liters of a 20%-solution of alcohol to reduce the concentration of alcohol in the solution by 75% ?