The task is to generate the correct answer for a given math problem.

Q: Problem: in a forest 150 deer were caught , tagged with electronic markers , then released . a week later , 50 deer were captured in the same forest . of these 50 deer , it was found that 20 had been tagged with the electronic markers . if the percentage of tagged deer in the second sample approximates the percentage of tagged deer in the forest , and if no deer had either left or entered the forest over the preceding week , what is the approximate number of deer in the forest ?

A: 6,000
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Q: Problem: how many quarters are equal to 7 dollars ?

A: 28
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Q: Problem: if x and y are positive integers and 3 + x + y + xy = 17 , what is the value of x + y ?

A:
6
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