Answer :
Data:
Cheese: c
People: p
Sarah:
c=2.5 cups
p=10
Arun:
c=1.6 cups
p=8
To find the number of cups of cheese that Arun need to a serving you divide the 1.6 cups into 8 (8 servings):
[tex]\frac{1.6}{8}=0.2[/tex]Then, Arun needs 0.2 cups of cheese for 1 serving.