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: in a mayoral election, candidate x received 1 / 2 more votes than candidate y, and candidate y received 2 / 5 fewer votes than z. if z received 25000 votes how many votes did candidate x received ?
Options: a. 18000, b. 22500, c. 24000, d. 26000, e. 32000

SOLUTION: b

PROBLEM: Problem: if ryan and smith car ratio is 5: 8. ryan bought 6 new car and smith bought 2 new car. now, smith has 18 car. what is their car ratio now ?
Options: a. 5: 4, b. 3: 2, c. 8: 9, d. 6: 5, e. 7: 5

SOLUTION:
c