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: a merchant sells an item at a 20 % discount, but still makes a gross profit of 20 percent of the cost. what percent of the cost would the gross profit on the item have been if it had been sold without the discount ?
Options: a. 20 %, b. 40 %, c. 50 %, d. 60 %, e. 75 %
answer:
c


question:
Problem: if julie rows 32 km upstream and 72 km down steam taking 4 hours each, then the speed of the stream
Options: a. 1.5 kmph, b. 0.5 kmph, c. 0.4 kmph, d. 1.6 kmph, e. 2.5 kmph
answer:
b


question:
Problem: of the diplomats attending a summit conference, 17 speak french, 32 do not speak russian, and 20 % of the diplomats speak neither french nor russian. if 10 % of the diplomats speak both languages, then how many diplomats attended the conference ?
Options: a. 72, b. 96, c. 108, d. 120, e. 150
answer:

e