Answer: Eddie needs 20/3 cups or approximately 6.67 cups of flour for 2 1/2 batches of pancakes.
Step-by-step explanation: To find out how much flour Eddie needs for 2 1/2 batches of pancakes, we need to multiply the amount of flour needed for one batch by 2 1/2.
First, let's convert the mixed number 2 1/2 into an improper fraction.
2 1/2 can be written as (2 * 2) + 1 = 5/2.
Now, we can multiply the amount of flour needed for one batch (2 2/3 cups) by 5/2.
To multiply fractions, we multiply the numerators (the top numbers) together and the denominators (the bottom numbers) together.
So, (2 2/3) * (5/2) = (8/3) * (5/2).
Next, we multiply the numerators: 8 * 5 = 40.
And multiply the denominators: 3 * 2 = 6.
Therefore, Eddie needs 40/6 cups of flour for 2 1/2 batches of pancakes.
To simplify the fraction, we can divide the numerator and denominator by their greatest common divisor, which is 2.
40/6 ÷ 2/2 = (40 ÷ 2) / (6 ÷ 2) = 20/3.
So, Eddie needs 20/3 cups of flour for 2 1/2 batches of pancakes.
In decimal form, this is approximately 6.67 cups of flour.
Therefore, Eddie needs 20/3 cups or approximately 6.67 cups of flour for 2 1/2 batches of pancakes.