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: if ( 1 1.25 ) n = 4, then n =
Options: a. 400, b. 16, c. 4, d. 4, e. 400
answer:
b

question:
Problem: a couple who own an appliance store discover that if they advertise a sales discount of 10 % on every item in the store, at the end of one month the number of total items sold increases 15 %. their gross income from sales for one month increases by what percent ?
Options: a. 1.5 %, b. 2.5 %, c. 3.5 %, d. 4.5 %, e. 5.5 %
answer:
c

question:
Problem: jonathan can type a 40 page document in 40 minutes, susan can type it in 30 minutes, and jack can type it in 24 minutes. working together, how much time will it take them to type the same document ?
Options: a. 5 minutes, b. 10 minutes, c. 15 minutes, d. 18 minutes, e. 20 minutes
answer:
b