SOLUTION: Alcohol and water are mixed in the ratio of 1:4 by volume. Volume of the solution is 600 cm3, volume of alcohol is 120 cm3 and volume of water is 480 cm3. How much alcohol must b

Question 877169: Alcohol and water are mixed in the ratio of 1:4 by volume. Volume of the solution is 600 cm3, volume of alcohol is 120 cm3 and volume of water is 480 cm3. How much alcohol must be added to the solution so that the ratio of alcohol to water in the solution becomes 1:3 by volume?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let x = amount of alcohol added

120/480 = 1/4

(120+x)/480 = 1/3

3(120+x) = 1*480

360+3x = 480

3x = 480-360

3x = 120

x = 120/3

x = 40

You need to add 40 cm^3 of alcohol.
RELATED QUESTIONS
What is the volume of the pyramid in the diagram? 1,500 cm3 2,500 cm3 4,500 cm3... (answered by Fombitz)

How many cm3 of a 90% alcohol by volume solution must be added to 1000cm3 of a solution... (answered by josgarithmetic)

A solution of alcohol and water contains 29 milliliters of alcohol and 87 milliliter of... (answered by stanbon,TeachMath)

A container holds 5 L. What is the volume of the water in cm3? (answered by Alan3354,solver91311)

An oblique prism has a square base and height of 3 centimeters. What is the volume... (answered by ikleyn)

Volume = 34,300 cm3 What is the volume of the cube in cubic... (answered by ewatrrr)

Mass of water given volume = 30 cm3 and density = 1... (answered by KMST)

Both solution X and solution Y contain alcohol and water. In solution X the ratio of... (answered by richwmiller,vksarvepalli)