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

[EX Q]: Problem: a , b and c , each working alone can complete a job in 6 , 8 and 12 days respectively . if all three of them work together to complete a job and earn $ 1170 , what will be b ' s share of the earnings ?
[EX A]: $ 390

[EX Q]: Problem: a certain bacteria colony doubles in size every day for 25 days , at which point it reaches the limit of its habitat and can no longer grow . if two bacteria colonies start growing simultaneously , how many days will it take them to reach the habitat ' s limit ?
[EX A]: 2

[EX Q]: Problem: convert 0.32 in to a vulgar fraction ?
[EX A]:
8 / 25