a paint color is made by mixing red and yellow paint. the ratio of red to yellow is 4 to 9. how many quarts of yellow paint must be used for 12 quarts of red? explain how you find your answer.
math - Ms. Sue, Wednesday, January 26, 2011 at 4:45pm
Set up a proportion, cross multiply, and solve for x.
4/9 = 12/x