Fractions

Hi All,

any way to approch this kind of question very fast, please explain step by step if you can

A receipe requires 2 1/2 (mixed number) cups of flour 2 3/4(mixed number) cups of sugar and 1 1/3(mixed number) cups of milk to make one cake.
Victor has 15 cups if flour, 16 cups of sugar and 8 cups of milk.
What is the gretest number of cakes Victor can make using this recipe?

a 5
b 6
c 7
d 8
e 9

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