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 h. c. f. of two numbers is 30 and the other two factors of their l. c. m. are 15 and 12. the larger of the two numbers is
Options: a. 476, b. 399, c. 450, d. 322, e. none
answer:
c


question:
Problem: a, b, c can complete a piece of work in 24, 8,12 days. working together, they complete the same work in how many days ?
Options: a. 4, b. 4 / 5, c. 7 / 9, d. 10, e. 24 / 7
answer:
a


question:
Problem: if the personal income tax rate is lowered from 46 % to 32 %, what is the differential savings for a tax payer having an annual income before tax to the tune of $ 36000 ?
Options: a. $ 3500, b. $ 5040, c. $ 3150, d. $ 7000, e. $ 10000
answer:

b