SOLUTION: Suppose you have 4 liters of paint that is 60 %green and 40 % white. How much green paint must you add to produce a mixture that is 80%green and 20 % white answer: 4 liters of

Algebra ->  Customizable Word Problem Solvers  -> Evaluation -> SOLUTION: Suppose you have 4 liters of paint that is 60 %green and 40 % white. How much green paint must you add to produce a mixture that is 80%green and 20 % white answer: 4 liters of      Log On

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Question 164275: Suppose you have 4 liters of paint that is 60 %green and 40 % white. How much green paint must you add to produce a mixture that is 80%green and 20 % white

answer: 4 liters of green are added
need a break down of how they got 4 liters of green were added

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let's call the liters of paint added G.
You start out with 4 liters of paint that is 60 %green and 40 % white.
4(60/100)=2.4 liters green
4(40/100)=1.6 liters white
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I want the percentage of green to be 80% when I add G liters, then,
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Liters of Green/Liters of Paint=Percent Green
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%282.4%2BG%29%2F%284%2BG%29=0.80
2.4%2BG=0.8%2A%284%2BG%29
2.4%2BG=3.2%2B0.80G
0.2G=0.8
G=4