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

Q: Problem: audrey 4 hours to complete a certain job . ferris can do the same job in 3 hours . audrey and ferris decided to collaborate on the job , working at their respective rates . while audrey worked continuously , ferris took 5 breaks of equal length . if the two completed the job together in 2 hours , how many minutes long was each of ferris ' breaks ?

A: 6
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Q: Problem: if a a b = 2 a - 3 b + ab , then 3 a 2 + 2 a 3 is equal to :

A: 7
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Q: Problem: the h . c . f . of two numbers is 25 and the other two factors of their l . c . m . are 13 and 14 . the larger of the two numbers is :

A:
35
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