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: Megan had 49 markers . Robert gave her 39 more markers . How many markers does Megan have altogether ?

Answer: 88


Question: A pet shelter had 9 puppies when another 12 were brought in . If 3 puppies a day are adopted , how long would it take for all of them to be adopted ?

Answer: 7


Question: There are 4 walnut trees currently in the park . Park workers will plant 6 more walnut trees today . How many walnut trees will the park have when the workers are finished ?

Answer:
10