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.

[Q]: Sandy grew 6 carrots. Sam grew 3 carrots. How many carrots didthey grow in total?
[A]: 9.0


[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?
[A]: 10.4


[Q]: Joan found 79 seashells on the beach, she gave Mike 63 of theseashells. How many seashells does she now have?
[A]:
16.0