Question

Recipe uses ½ c butter, 4 tablespoons kernels, and 1 tsp salt. If you use 10 tbs kernels, how much butter will you need? step-by-step

Answer 1

To determine how much butter you need when using 10 tablespoons of kernels, we can follow these steps:

1. **Identify the original ratios from the recipe:**
- The recipe calls for ½ cup of butter and 4 tablespoons of kernels.
- First, let's convert ½ cup of butter into tablespoons because we are using tablespoons for kernels.
- Since 1 cup = 16 tablespoons, then:
\[
\frac{1}{2} \text{ cup} = \frac{16}{2} = 8 \text{ tablespoons of butter}
\]

2. **Establish the ratio of butter to kernels from the original recipe:**
- The original recipe uses 8 tablespoons of butter for 4 tablespoons of kernels.
- This gives us a ratio of:
\[
\frac{8 \text{ tablespoons of butter}}{4 \text{ tablespoons of kernels}} = 2 \text{ tablespoons of butter per tablespoon of kernels}
\]

3. **Calculate the amount of butter needed for 10 tablespoons of kernels:**
- Since the ratio is 2 tablespoons of butter for every 1 tablespoon of kernels, we can calculate the amount of butter needed for 10 tablespoons of kernels:
\[
\text{Butter needed} = 2 \text{ tablespoons of butter} \times 10 \text{ tablespoons of kernels} = 20 \text{ tablespoons of butter}
\]

4. **Convert 20 tablespoons of butter back to cups if necessary:**
- Since we know that 1 cup = 16 tablespoons, we can convert to cups:
\[
20 \text{ tablespoons} \div 16 \text{ tablespoons per cup} = 1.25 \text{ cups of butter}
\]

Therefore, if you use 10 tablespoons of kernels, you will need **20 tablespoons of butter**, which is equivalent to **1.25 cups of butter**.