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

Q: Problem: if x and j are integers and 2 x – j = 11 , then 4 x + j can not be

A: 17
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Q: Problem: a can do a work in 15 days and b in 20 days . if they work on it together for 5 days , then the fraction of the work that is left is

A: 5 / 12
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Q: Problem: it is the new year and mandy has made a resolution to lose weight this year . she plans to exercise and do yoga . for exercise she plans to workout at the gym and ride her bicycle in the ratio of 2 : 3 everyday . she will also do yoga in the ratio , yoga : exercise = 2 : 3 . if she rides her bike for 18 minutes , how much time will she spend doing yoga ? ( rounded to minutes )

A:
30 min .
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