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.
--------
Question: Problem: the lcm of two numbers is 2310 and hcf is 55. if one of the numbers is 210. then what is the other number ?
Options: a. 715, b. 825, c. 330, d. 605, e. 465

Answer: d

Question: Problem: the present population of a town is 2000. population increase rate is 20 % p. a. find the population of town after 1 years ?
Options: a. 1000, b. 2400, c. 1500, d. 1600, e. 1250

Answer: b

Question: Problem: a group of boy scouts and girls scouts is going on a rafting trip. 70 % of the scouts arrived with signed permission slips. if 60 % of the scouts were boy scouts and 75 % of the boy scouts arrived with signed permission slips, then what percentage of the girl scouts arrived with signed permission slips ? round to the nearest percent.
Options: a. 50 %, b. 60 %, c. 63 %, d. 66 %, e. 70 %

Answer:
c