The task is to generate the correct answer for a given math problem.
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Question: Problem: if | x - 9 | = 3 x , then x = ?

Answer: - 4.


Question: Problem: of 30 applicants for a job , 9 had at least 4 years ' experience , 18 had degrees , and 3 had less than 4 years ' experience and did not have a degree . how many of the applicants had at least 4 years ' experience and a degree ?

Answer: 10


Question: Problem: if n is a positive integer and n ^ 2 is divisible by 72 , then the largest positive integer w that must divide n is ?

Answer:
12