SOLUTION: If 2000 cm3 of 4% alcohol was combined with 400 cm3 of 10% alcohol, how much of a solution of 50% alcohol should be added to make a solution of 20% alcohol?

Question 1080894: If 2000 cm3 of 4% alcohol was combined with 400 cm3 of 10% alcohol, how much of a solution of 50% alcohol should be added to make a solution of 20% alcohol?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
If 2000 cm3 of 4% alcohol was combined with 400 cm3 of 10% alcohol, how much of a solution of 50% alcohol should be added to make a solution of 20% alcohol?
----------------
Add C cc's of 50%
---
2000*4 + 400*10 + C*50 = (2000+400+C)*20 = 48000 + 20C
12000 + 50C = 48000 + 20C
30C = 36000
C = 1200 cc's of 50%
RELATED QUESTIONS
Alcohol and water are mixed in the ratio of 1:4 by volume. Volume of the solution is 600... (answered by jim_thompson5910)

In chemistry class, 10 liters of a 15% alcohol solution must be mixed with a 75% alcohol... (answered by jorel1380)

how much alcohol should be added to 1 liter of a 30% alcohol solution to get a 50%... (answered by richwmiller)

Solution A has 50% alcohol wine while solution B has 75% alcohol,how much of each... (answered by ikleyn)

How many liters of a 20% alcohol solution should be added to a 10% alcohol solution to... (answered by stanbon)

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

how much pure alcohol must be added to 4 liters of 10% alcohol solution to make a... (answered by TimothyLamb)

One alcohol solution contains 10% alcohol and another contains 25% alcohol. How much of... (answered by josgarithmetic)

How much of a 70% alcohol solution and how much of a 30% alcohol solution should be mixed (answered by Alan3354)