A recipe calls for 4 cups of flour. Lauren wants to make 20% more servings than the recipe makes. Which expression represents how many cups of flour Lauren should use?

A. 1/5*4

B. 4/5*4

C. 6/5*4

D. 9/5*4

C. 6/5 * 4

6/5 = 1.20 where. 20 represents the 20% increase in serving.

1.20 * 4 = 4.8 is the total cups of flour needed to increase serving by 20%

4 is the 100%; the desired increase is 20%; therefore: 100% + 20% = 120% based on 4 cups. So, 120% : 100% = 1.2 * 4 = 4.80 cups