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: 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: the batting average of a particular batsman is 60 runs in 46 innings. if the difference in his highest and lowest score is 140 runs and his average excluding these two innings is 58 runs, find his highest score.
Options: a. 179, b. 367, c. 269, d. 177, e. 174
answer:
e


question:
Problem: on a certain date, pat invested $ 5,000 at x percent annual interest, compounded annually. if the total value of the investment plus interest at the end of 10 years will be $ 20,000, in how many years total will the total value of the investment plus interest increase to $ 40,000 ?
Options: a. 15, b. 16, c. 18, d. 20, e. 24
answer:

a