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

[EX Q]: Problem: a train running at the speed of 72 km / hr crosses a pole in 9 seconds . find the length of the train .
[EX A]: 180 meter

[EX Q]: Problem: if a drawing has an outer circle of diameter 30 and an inner circle of diameter 24 , then what fraction of outer circle ' s surface is not covered by the inner circle ?
[EX A]: 9 / 25', 'e ) 2 / 3'

[EX Q]: Problem: a certain sum of money is divided among a , b and c so that for each rs . a has , b has 65 paisa and c 40 paisa . if c ' s share is rs . 56 , find the sum of money ?
[EX A]:
287