Answer:
1.00 cup
Explanation:
-Given that for every 2 servings 3/4 cups of sugar is needed.
-Let X be the number of cups needed for 5 1/3 servings.
#We equate and cross-multiply the ratios to solve for X:

-We know that the baker already has 1 cup of sugar:

Hence, the baker needs an additional 1.00 cup of sugar