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: if the price of a certain computer increased 30 percent from b dollars to 351 dollars, then 2 b =
Options: a. 540, b. 570, c. 619, d. 649, e. 700

SOLUTION: a

PROBLEM: Problem: 30 pens and 75 pencils were purchased for 750. if the average price of a pencil was 2.00, find the average price of a pen.
Options: a. 20, b. 11, c. 12, d. 13, e. 14

SOLUTION: a

PROBLEM: Problem: si on a certain sum of money for 3 yrs at 8 percent / annum is 1 / 2 the ci on rs. 4000 for 2 yrs at 10 percent / annum. the sum placed on si is ?
Options: a. rs. 1700, b. rs. 1720, c. rs. 1750, d. rs. 1850, e. rs. 2000

SOLUTION:
c