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: evaluate: 98612 / 22 * 11 * 70 = ?
Options: a. 700.4, b. 704.4, c. 740.4, d. 744.4, e. 700.0

SOLUTION: b

PROBLEM: Problem: barbata invests $ 2200 in the national bank at 5 %. how much additional money must she invest at 8 % so that the total annual income will be equal to 6 % of her entire investment ?
Options: a. 1100, b. 3000, c. 1000, d. 3600, e. 2400

SOLUTION: a

PROBLEM: Problem: a sports equipment store sold ping pong rackets for a total of $ 637. if the average ( arithmetic mean ) price of a pair of rackets is $ 9.8, how many pairs were sold ?
Options: a. 50, b. 100, c. 65, d. 500, e. 980

SOLUTION:
c