Final answer:
The combined weight of Snickers and Gobstoppers is 21.8 g greater than the weight of a Milky Way.
Step-by-step explanation:
The question is asking to find the difference between the combined weight of Snickers and Gobstoppers and the weight of Milky Ways. First, we add the weight of Snickers (23.7 g) to the weight of Gobstoppers (15.9 g), which gives us a total of 39.6 g. Then, we subtract the weight of a Milky Way (17.8 g) from this total. The difference is 39.6 g - 17.8 g = 21.8 g. Therefore, the combined weight of Snickers and Gobstoppers is 21.8 g more than the weight of a Milky Way.