Question

A certain shade of light blue paint is made by mixing 1 1/2 quarts of blue paint with 5 quarts of white paint. How much white paint would you need to mix with 4 quarts of blue paint

Answer 1

We can make a proportion:

1.5/5 = 4/x,

1.5x = 20,

x = 13.33 quarts or 13 1/3 quarts of white paint.