instruction:
Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
question:
Problem: a train of length 250 m crosses a bridge of length 150 m in 20 seconds. what is the speed of train ?
Options: a. 33, b. 27, c. 25, d. 22, e. 72
answer:
e


question:
Problem: if y exceeds x by 25 %, then x is less than y by ?
Options: a. 28 %, b. 21 %, c. 20 %, d. 30 %, e. 29 %
answer:
c


question:
Problem: a, b and c rents a pasture for rs. 730. a put in 12 horses for 8 months, b 16 horses for 9 months and 18 horses for 6 months. how much should c pay ?
Options: a. 270, b. 199, c. 676, d. 156, e. 227
answer:

e