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]: It rained 0.2 inches on Saturday and 0.4 inches on Sunday. How muchdid it rain on Saturday and Sunday combined?
[A]: 0.6

[Q]: There were originally 20817 houses in Lincoln County. During ahousing boom, developers built 97741. How many houses are therenow in Lincoln County?
[A]: 118558.0

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