Janice has 2 2/3 cups of flour. She makes 5 equal-sized portions from the flour. She uses one of the portions to make crepes. Each crepe uses 8/45 of a cup of flour. How many crepes does Janice make?
Janice has a total of 2 2/3 = 8/3 cups of flour.
Each portion is 8/3 / 5 = <<8/3/5=8/15>>8/15 cup.
Janice makes 8/15 / 8/45 = <<8/15/8/45=9>>9 crepes. Answer: \boxed{9}.
To calculate the number of crepes Janice makes, we need to determine how many portions of flour she uses.
To find the number of portions used, divide the total amount of flour, 2 2/3 cups, by the portion size.
Let's convert the mixed number 2 2/3 into an improper fraction:
2 2/3 = (2 × 3 + 2) / 3 = 8/3
Now we can divide:
8/3 ÷ 1/5 = 8/3 × 5/1 = (8 × 5) / (3 × 1) = 40/3
So Janice uses 40/3 portions of flour.
To find the number of crepes, we need to divide the number of portions used by the amount of flour needed for each crepe.
Let's convert the fraction 40/3 into a mixed number:
40/3 = 13 1/3
So Janice makes 13 crepes using the given amount of flour.
To find out how many crepes Janice can make, we first need to determine how much flour is used per crepe. Janice has 2 2/3 cups of flour, which can be written as a mixed number.
Converting the mixed number to an improper fraction:
2 2/3 = (2 x 3 + 2)/3 = 8/3
So, Janice has 8/3 cups of flour in total.
Next, we need to find out how much flour is used per crepe. We are given that 5 equal-sized portions are made from the flour and each crepe uses 8/45 of a cup of flour.
To determine the amount of flour used in one portion, we divide the total amount of flour by the number of portions:
(8/3) ÷ 5
Dividing fractions involves multiplying the first fraction by the reciprocal of the second fraction:
(8/3) ÷ (5/1) = (8/3) x (1/5) = 8/15
Therefore, each portion contains 8/15 cups of flour.
Finally, we divide the total amount of flour by the amount used per crepe to find the number of crepes Janice can make:
(8/3) ÷ (8/15)
Dividing fractions again involves multiplying by the reciprocal:
(8/3) ÷ (8/15) = (8/3) x (15/8) = 120/24 = 5
Hence, Janice can make 5 crepes.