Carlos mixed 3 1⁄2 cups of red paint with 4 1⁄2 cups of yellow paint to make an orange paint. How many cups of red paint and how many cups of yellow paint will Carlos need to make 12 cups of the same shade of orange paint?
Ratio of red to yellow 3.5 : 4.5 3.5 out of 8 are red or 3.5/8
3.5/8 * 12 cups = 5 . 25 cups or 5 1/4 cups red