A recipe for cornbread calls for 3 cups of flour for every

3
1

cup of water. Using the same recipe, how much water will you need for 8 cups of flour?
Start by setting up a table that could be used to find how many cups of water you will need for 8 cups of flour.
Cups of Flour Cups of Water

3

3
1



8

?
You got it!
How many cups of water will you need for 8 cups of flour? Fill in that information in the table. Solve on paper. Then, enter your answer on Zearn.
Cups of Flour Cups of Water
3
3
1


8

1 answer

To determine how many cups of water you need for 8 cups of flour using the same recipe, we can set up a proportion based on the recipe's original ratio of flour to water.

Given:

  • 3 cups of flour require 3 1/2 (or 3.5) cups of water.

Set Up the Table:

| Cups of Flour | Cups of Water | |---------------|---------------| | 3 | 3.5 | | 8 | ? |

Proportion Method: You can create a proportion based on the amounts given:

\[ \frac{3 \text{ cups of flour}}{3.5 \text{ cups of water}} = \frac{8 \text{ cups of flour}}{x \text{ cups of water}} \]

Cross-multiply to solve for \( x \):

\[ 3 \cdot x = 3.5 \cdot 8 \]

Calculating the right side:

\[ 3.5 \cdot 8 = 28 \]

So we have:

\[ 3x = 28 \]

Now, divide both sides by 3:

\[ x = \frac{28}{3} \approx 9.33 \]

Final Table:

| Cups of Flour | Cups of Water | |---------------|---------------| | 3 | 3.5 | | 8 | 9.33 |

Thus, for 8 cups of flour, you will need approximately 9.33 cups of water.