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

[Q]: Problem: a train running at the speed of 70 km / hr crosses a pole in 9 sec . what is the length of the train ?
[A]: 175 m


[Q]: Problem: a hiker walking at a constant rate of 4 kilometers per hour is passed by a cyclist travelling in the same direction along the same path at a constant rate of 24 kilometers per hour . the cyclist stops and waits for the hiker 5 minutes after passing her while the hiker continues to walk at her constant rate . how many minutes must the cyclist wait until the hiker catches up ?
[A]: 25


[Q]: Problem: the average of 45 results is 25 and the average of other 25 results is 45 . what is the average of all the results ?
[A]:
32