The ratio of the nunber of cups of yellow paint to the nunber of cups of blue paint that Greg mixed to make a shade of green paint is 2:1. Part A: write a sentence to describe the number of cups of yellow paint that greg mixed with each cup of the blue paint ( points) Part B: How many cups of blue paint shoudl Greg add to each cup of yellow paint to make the shade of green? Explain your resoaing. ( 4 points) Part C: If greg purchased 6 cups of yellow paint for $54, what is the unit price per cup of yelow paint? (2 points)