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: the perimeter of an isosceles right triangle is 12 + 12 sq rt 2. what is the length of the hypotenuse of the triangle ?
Options: ['a. 5', 'b. 6', 'c. 7', 'd. 8.485', 'e. 8']
answer:
d


question:
Problem: x does a work in 20 days. y does the same work in 40 days. in how many days they together will do the same work ?
Options: a. 10, b. 12, c. 20, d. 30, e. 13.33
answer:
e


question:
Problem: in a garment industry, 12 men working 9 hours per day complete a piece of work in 10 days. to complete the same work in 12 days, working 15 hours a day, the number of men required is :
Options: a. 4, b. 5, c. 6, d. 7, e. 9
answer:

d