Answer:
Karl should use 3/16 cup of chili
Explanation:
From the question, we are told that the recipe calls for 3/8 to be used
However, Karl wants to use half of this
what we have to simply do here is to divide what was stated in the recipe to be used by 2
We can either divide by 2 or simply multiply by 1/2
Mathematically, we have this as;
3/8 * 1/2 = 3/16 of a cup