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 goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 24 seconds. what is the length of the goods train ?
Options: a. 230 m, b. 240 m, c. 260 m, d. 270 m, e. none of these
answer:
a


question:
Problem: sheila works 8 hours per day on monday, wednesday and friday, and 6 hours per day on tuesday and thursday. she does not work on saturday and sunday. she earns $ 360 per week. how much does she earn in dollars per hour ?
Options: a. 11, b. 10, c. 9, d. 8, e. 7
answer:
b


question:
Problem: a grocer has a sale of rs. 5435, rs. 5927, rs. 5855, rs. 6230 and rs. 5562 for 5 consecutive months. how much sale must he have in the sixth month so that he gets an average sale of rs. 5500 ?
Options: a. 4991, b. 5991, c. 3991, d. 6542, e. 6995
answer:

c