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

Problem: if mn ≠ 0 and 25 percent of n equals 37 1 / 2 percent of m , what is the value of 12 n / m ?
18

Problem: a , b , c , d , e , f , g , h sitting in a row what is the probability that a , b , c sitting together ?
3 / 28

Problem: a man sitting in a train which is travelling at 50 kmph observes that a goods train , travelling in opposite direction , takes 9 seconds to pass him . if the goods train is 280 m long , find its speed ?

62 kmph .