Beth makes purple paint by mixing 3 cups of blue paint with 5 cups of red paint.
A. How many cups of blue paint does Beth need if she uses 20 cups of red paint?
Beth needs _23 cups of blue paint if she uses 20 cups of red paint.
. B. How many cups of red paint does Beth need if she uses 18 cups of blue paint?.
Beth needs cups of red paint if she uses 18 cups of blue paint.