Final answer:
To find out how many cups of flour are needed for 22 cups of oatmeal, set up a proportion using the given ratio of flour to oatmeal in Sara's recipe. Solve for x by cross multiplying and dividing both sides. The answer is 8.8 cups of flour.
Step-by-step explanation:
To find out how many cups of flour are needed for 22 cups of oatmeal, we can set up a proportion using the given ratio of flour to oatmeal in Sara's recipe.
The ratio of flour to oatmeal is 2 cups of flour for every 5 cups of oatmeal.
So, the proportion becomes:
2 cups / 5 cups = x cups / 22 cups
To solve for x, we cross multiply and get: 2 * 22 = 5 * x
Simplifying further, we have: 44 = 5x
Dividing both sides by 5, we find that x = 8.8 cups of flour are needed for 22 cups of oatmeal.
Therefore, 8.8 cups of flour are needed.