Question

A certain shade of pink is created by adding 3 cups of red paint to 7 cups of white paint.

How many cups of red paint should be added to 1 cup of white paint? (write your answer as a simplified fraction)

cups of white paint cups of red paint
Row 1 1
Row 2 7 3
What is the constant of proportionality?

Answer 1

3/7 cup

Explanation:

3/7 = x/1 where x is the of red paint. x/1=x, so

x = 3/7 cup