Detailed Instructions: 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.
Problem:Problem: at an upscale fast - food restaurant, shin can buy 3 burgers, 7 shakes, and one cola for $ 120. at the same place it would cost $ 164.50 for 4 burgers, 10 shakes, and one cola. how much would it cost for a meal of one burger, one shake, and one cola ?
Options: a. $ 21, b. $ 27, c. $ 31, d. $ 41, e. it can not be determined
Solution:
c