How much water should be added to 10 liters of a 20%-solution of alcohol to reduce the concentration of alcohol in the solution by 75% ?
Choose the correct choice from the following answers.
A) 25 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.=10+x)))   2=5%*(10+x)--------&gt;x=30   ANSWER:30 liters
<result>C</result>
How much water should be added to 10 liters of a 20%-solution of alcohol to reduce the concentration of alcohol in the solution by 75% ?