Final answer:
To find out how many more hot dogs Marilyn ate than Eric, subtract the number of hot dogs Eric ate from the number of hot dogs Marilyn ate.
Step-by-step explanation:
In this problem, Eric ate N hot dogs and Marilyn ate S hot dogs, with S being greater than N. To find out how many more hot dogs Marilyn ate than Eric, we need to calculate the difference between the number of hot dogs they each ate. The difference is found by subtracting the number of hot dogs Eric ate from the number of hot dogs Marilyn ate:
Marilyn's hot dogs - Eric's hot dogs = S - N
So, Marilyn ate S - N more hot dogs than Eric.