instruction:
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: lucy bought a 1 - year, 10000 certificate of deposit that paid interest at an annual rate of 8 percent compunded semiannually. what was the total amount of interest paid on this certificate at maturity ?
Options: a. 10464, b. 864, c. 816, d. 800, e. 480
answer:
d


question:
Problem: the cost price of a radio is rs. 1800 and it was sold for rs. 1430, find the loss % ?
Options: a. 18 %, b. 20.5 %, c. 30 %, d. 45 %, e. 12 %
answer:
b


question:
Problem: a certain debt will be paid in 65 installments from january 1 to december 31 of a certain year. each of the first 20 payments is to be $ 410; each of the remaining payments is to be $ 65 more than each of the first 20 payments. what is the average ( arithmetic mean ) payment that will be made on the debt for the year ?
Options: a. 443, b. 455, c. 465, d. 468, e. 475
answer:

b