To find out how much butter Jennie needs when using 10 tablespoons of kernels, we can set up a proportion based on the original recipe.
The original recipe calls for:
- \( \frac{1}{2} \) cup of butter
- 3 tablespoons of kernels
Now, let’s express \( \frac{1}{2} \) cup of butter in tablespoons, since there are 16 tablespoons in a cup:
\[ \frac{1}{2} \text{ cup} = \frac{1}{2} \times 16 \text{ tablespoons} = 8 \text{ tablespoons} \]
Now, we have the following proportions:
- 8 tablespoons of butter for 3 tablespoons of kernels.
To find out how much butter is needed for 10 tablespoons of kernels, we can set up the proportion:
\[ \frac{8 \text{ tablespoons of butter}}{3 \text{ tablespoons of kernels}} = \frac{x \text{ tablespoons of butter}}{10 \text{ tablespoons of kernels}} \]
Now we can cross-multiply to solve for \( x \):
\[ 8 \times 10 = 3 \times x \]
This simplifies to:
\[ 80 = 3x \]
Now, divide both sides by 3 to isolate \( x \):
\[ x = \frac{80}{3} \approx 26.67 \text{ tablespoons of butter} \]
Now we convert this back to cups (since there are 16 tablespoons in a cup):
\[ \frac{26.67}{16} \approx 1.67 \text{ cups of butter} \]
Thus, if Jennie uses 10 tablespoons of kernels, she will need approximately 1.67 cups of butter.
So the correct response is:
1.67