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: what is the median of a set of consecutive integers if the sum of nth number from the beginning and nth number from the end is 110 ?
Options: a. 10, b. 25, c. 55, d. 75, e. 100
answer:
c


question:
Problem: a mixture of 70 litres of milk and water contains 10 % water. how many litres of water should be added to the mixture so that the mixture contains 12 1 / 2 % water ?
Options: a. 2, b. 8, c. 6, d. 3, e. 4
answer:
a


question:
Problem: a train is 360 meter long is running at a speed of 52 km / hour. in what time will it pass a bridge of 140 meter length.
Options: a. 24.62 seconds, b. 34.62 seconds, c. 44.62 seconds, d. 54.62 seconds, e. none of these
answer:

b