instruction:
You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.
question:
A restaurant made 9 hamburgers to serve during lunch. Only 3 wereactually served. How many hamburgers were over from lunch?
answer:
6.0


question:
Wendy ran 19.8 miles and walked 9.2 miles. How much farther did Wendy run thanwalk?
answer:
10.6


question:
Nancy found 35 seashells and 25 starfish on the beach. She gave 17of the seashells to Jason. How many seashells does Nancy now have?
answer:

18.0