instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: a train 150 m long is running at a speed of 68 kmph . how long does it take to pass a man who is running at 8 kmph in the same direction as the train ?
answer:
9 sec


question:
Problem: a train crosses a bridge of length 200 m in 10 seconds and a lamp post on the bridge in 5 seconds . what is the length of the train in metres ?
answer:
200 m


question:
Problem: if 40 % of ( x - y ) = 30 % of ( x + y ) then what percent of x is y ?
answer:

14 %