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.

[EX Q]: Sara got fast food for lunch. Sara spent $5.30 on a hotdog and $5.10 on a salad. What was the total of the lunch bill?
[EX A]: 10.4

[EX Q]: Jason has 43 blue and 16 red marbles. Tom has 24 blue marbles.How many blue marbles do they have in all?
[EX A]: 67.0

[EX Q]: A restaurant made 9 hamburgers to serve during lunch. Only 3 wereactually served. How many hamburgers were over from lunch?
[EX A]:
6.0