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: if a man lost 10 % by selling oranges at the rate of 12 a rupee at how many a rupee must he sell them to gain 44 % ?
Options: a. 6.5, b. 7.5, c. 7, d. 8, e. 2
answer:
b

question:
Problem: in what time will a railway train 50 m long moving at the rate of 36 kmph pass a telegraph post on its way ?
Options: a. 5 sec, b. 4 sec, c. 3 sec, d. 6 sec, e. 1 sec
answer:
a

question:
Problem: a certain article of clothing was discounted during a special sale to 3 / 4 of its original retail price. when the clothing did n ' t sell, it was discounted even further to 1 / 3 of its original retail price during a second sale. by what percent did the price of this article of clothing decrease from the first sale to the second sale ?
Options: a. 50 %, b. 33.33 %, c. 25 %, d. 55.55 %, e. 12.5 %
answer:
d