instruction:
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.
question:
While making pastries, a bakery used 0.2 bag of wheat flour and 0.1 bag of white flour. How many bags of flour did the bakery use in all?
answer:
0.3


question:
Dan joined his school's band. He bought a clarinet for $130.30, and a song book which was $11.2. Dan found $12.32 in his pocket.How much did Dan spend at the music store?
answer:
141.5


question:
Tom has 9 yellow balloons Sara has 8 yellow balloons. How many yellow balloons do they have in total?
answer:

17.0