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.

A restaurant served 9 pizzas during lunch and 6 during dinner today.How many pizzas were served today?
15.0

On her vacation last summer, Trisha walked all over New York City to buy souvenirs. First, she walked 0.12 mile from her hotel to a postcard shop. Then she walked 0.15 milefrom the postcard shop to a T-shirt shop and 0.63 mile from the T-shirt shop back to the hotel. How many miles didTrisha walk in all?
0.9

A restaurant made 9 hamburgers to serve during lunch. Only 3 wereactually served. How many hamburgers were over from lunch?

6.0

