You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
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Question: Brad has 17 balloons . 8 balloons are red and the rest are green . How many green balloons does Brad have ?

Answer: 9

Question: Paul had saved up 4 dollars . If he received another 11 dollars for his allowance , how many 5 dollar toys could he buy ?

Answer: 3

Question: Sam has 110 books . Joan has 102 books . How many books do they have together ?

Answer:
212