To find the weight of 2 tablespoons of peanut butter, we can first determine the total weight of the ingredients you've provided.
You have:
- 2 slices of bread: 100 grams
- 1 tablespoon of grape jelly: 20 grams
The total weight of these two ingredients is: \[ 100 , \text{grams (bread)} + 20 , \text{grams (jelly)} = 120 , \text{grams} \]
You mentioned that the total weight of all ingredients is 184 grams. Therefore, the weight of the peanut butter can be calculated by subtracting the total weight of the bread and jelly from the overall total:
\[ 184 , \text{grams (total)} - 120 , \text{grams (bread and jelly)} = 64 , \text{grams} \]
Thus, the weight of 2 tablespoons of peanut butter is 64 grams.