SOLUTION: A paint mixture is made of 3/20 red paint and 9/20 blue paint and the rest is white paint. a. What fraction of the mixture is white paint? b. The paint is sold in 5-litres cont

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: A paint mixture is made of 3/20 red paint and 9/20 blue paint and the rest is white paint. a. What fraction of the mixture is white paint? b. The paint is sold in 5-litres cont      Log On


   

Question 1096265: A paint mixture is made of 3/20 red paint and 9/20 blue paint and the rest is white paint.
a. What fraction of the mixture is white paint?
b. The paint is sold in 5-litres containers, how many litres of red paint are needed for each container?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Red:3%2F20
Blue:9%2F20
White:X%2F20
So then the total would equal 1 or 20%2F20
So,
3%2F20%2B9%2F20%2BX%2F20=20%2F20
12%2BX=20
X=8
So then the fraction is,
W=8%2F20=2%2F5
.
.
.
R=5%283%2F20%29=15%2F20=3%2F4
3/4 liter of red is needed.