Dianna made several loaves of bread yesterday. Each loaf required 2 and 2 thirds cups of flour. All together, she used 13 and 1 third cups of flour. How many loaves did Dianna make?

Divide the total flour by the amount needed for each loaf: 13 1/3 ÷ 2 2/3. Converting to improper fractions gives 40/3 ÷ 8/3 = 40/3 × 3/8 = 5. Dianna made 5 loaves, so the correct choice is B) 5 loaves.

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