Question

You mix 1/3 cups of blue paint for every 2/3 cup of yellow paint to make green paint. You use 4 cups of yellow pant. How much blue paint do you use?

Answer 1

You use 2 cups of blue paint.

Explanation:

In this case, you can use a rule of three to find the amount of blue paint you need when you use 4 cups of yellow paint given that you mix 1/3 cups of blue paint for every 2/3 cup of yellow paint:

2/3 cup of yellow paint → 1/3 cups of blue paint

4 cups of yellow paint → x

x=(4*1/3)÷2/3

x=4/3÷2/3

x=4*3/3*2

x=12/6

x=2

According to this, the answer is that you use 2 cups of blue paint.