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]: A construction company bought 5.91 tons of gravel and 8.19 tons ofsand. How many tons of material did the company buy in all?
[A]: 14.1


[Q]: Sally had 760 quarters in her bank. She spent 418 of her quarters.How many quarters does she have now?
[A]: 342.0


[Q]: There are 9 oak trees currently in the park. Park workers had to cutdown 2 oak trees that were damaged. How many oak trees will thepark have when the workers are finished?
[A]:
7.0