Answer:
Explanation:
If Sara is making 3 batches of chocolate chip cookies using 2 1/4 cups of flour per batch, then the total amount of flour she uses for the chocolate chip cookies is:
3 batches x 2 1/4 cups per batch = 6 3/4 cups of flour
Since she will use 12 3/4 cups of flour for all six batches, the amount of flour used for the oatmeal cookies can be found by subtracting the amount of flour used for the chocolate chip cookies from the total amount of flour:
12 3/4 cups - 6 3/4 cups = 6 cups
To determine how many cups of flour are needed for each batch of oatmeal cookies, we can divide the total amount of flour used for the oatmeal cookies by the number of batches:
6 cups ÷ 3 batches = 2 cups per batch
Therefore, the equation that can be used to determine how many cups of flour are needed for each batch of oatmeal cookies is:
Flour needed per batch of oatmeal cookies = Total flour needed for oatmeal cookies ÷ Number of oatmeal cookie batches
Or, in this case:
Flour needed per batch of oatmeal cookies = 6 cups ÷ 3 batches = 2 cups per batch.