Posted by **JAY10** on Tuesday, September 23, 2008 at 11:55pm.

A painter is to mix green and yellow paint in the ratio of 4 to 7 to obtain the color she wants. If she has 28 liters of green paint, how many liters of yellow paint should be added?

I need to know what algebraic equation I need to use...I believe this is a proportion type question....

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