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To find the number of crepes Janice makes, we need to divide the total amount of flour she has (2 2/3 cups) by the amount of flour used per crepe (8/45 cup).
First, let's convert the mixed number of flour into an improper fraction:
2 2/3 = (2 * 3 + 2)/3 = 8/3
Now, we can divide the total amount of flour by the amount of flour used per crepe:
(8/3) / (8/45) = (8/3) * (45/8) = 45/3
Simplifying the fraction, we get: 15
Therefore, Janice makes 15 crepes. The answer is D. 15.