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: there are 27 different 3 - digit integers that can be formed using only the digits 3, 4 and 5. if all 27 of the integers were listed, what would their sum be ?
Options: a. 11,888, b. 11,988, c. 12,088, d. 12,188, e. 12,288
answer:
b


question:
Problem: a student travels from his house to school at 12 km / hr and reaches school 2 hours late. the next day he travels 20 km / hr and reaches school 1 hour early. what is the distance between his house and the school ?
Options: a. 90, b. 100, c. 110, d. 120, e. 130
answer:
a


question:
Problem: the perimeter of a triangle is 42 cm and the inradius of the triangle is 5.0 cm. what is the area of the triangle ?
Options: a. 128 cm 2, b. 36.0 cm 2, c. 105 cm 2, d. 25 cm 2, e. 135 cm 2
answer:

c