TASK DEFINITION: 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: increasing the original price of a certain item by 25 percent and then increasing the new price by 30 percent is equivalent to increasing the original price by what percent ?
Options: a. 31.25, b. 37.5, c. 50.0, d. 52.5, e. 62.5

SOLUTION: e

PROBLEM: Problem: 40 is subtracted from 60 % of a number, the result is 50. find the number ?
Options: a. 150, b. 330, c. 277, d. 279, e. 712

SOLUTION: a

PROBLEM: Problem: every monday, marina eats one croissant and every tuesday she eats two croissants. on each subsequent day of the week, she eats a number of croissants equal to the sum of the croissants eaten on the two previous days, with the exception that if she eats more than 4 croissants on any particular day, the next day she will eat only one croissant. at the end of the week ( which runs from monday through sunday ), the cycle resets, and marina goes back to eating one croissant on monday, two on tuesday, and so forth. if a particular month begins on a saturday, how many croissants will marina eat on the 30 th of that month ?
Options: a. 1, b. 2, c. 3, d. 5, e. 6

SOLUTION:
a