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: Sally grew 113 turnips and 118 pumpkins. Mary grew 129 turnips.How many turnips did they grow in total?

Answer: 242.0

Question: A petri dish originally contained 600 bacteria. A scientist let thebacteria grow and now there are 8917 of them. How many morebacteria are there now?

Answer: 8317.0

Question: Keith has 20 books. Jason has 21 books. How many books do theyhave together?

Answer:
41.0