instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: a train 800 m long can cross a pole in 10 sec and then find the speed of the train ?
answer:
28

question:
Problem: a train passes a platform in 32 seconds . the same train passes a man standing on the platform in 20 seconds . if the speed of the train is 54 km / hr , the length of the platform is
answer:
180 meter

question:
Problem: x starts a business with rs . 45000 . y joins in the business after 4 months with rs . 30000 . what will be the ratio in which they should share the profit at the end of the year ?
answer:
9 :