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: the average ( arithmetic mean ) of 8 numbers is 43.1 . if the sum of half of these numbers is 158.4 , what is the average of the other half ?
answer:
46.6

question:
Problem: two cubes of their volumes in the ratio 64 : 125 . the ratio of their surface area is :
answer:
4 :