Jennie is making popcorn. The recipe call for 1/2 cup of butter, 3 tablespoons of kernels and 2 teaspoon of salt. If she uses 10 tablespoons of kernels. How much butter does she need? Round your answer to the nearest hundredth.

To determine the amount of butter needed, we will set up a proportion.

1/2 / 3 = x / 10

Cross multiplying, we get:

3x = 10(1/2)
3x = 5
x = 5/3

Therefore, Jennie needs approximately 1.67 cups of butter.