TASK DEFINITION: You are given a mathematical question described with an open-ended vocabulary. Questions in this task involve real-world situations, describing a mathematical problem. You are also given 4 or 5 answer options (associated with "A", "B", "C", "D", "E"). Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D', 'E'. LaTeX mathematical format (the standard way to express mathematical expressions in the typesetting software known as LaTeX) is used to express equations. Each question is solvable with high school math knowledge. Give only one answer for each question.
PROBLEM: A class of 30 students had an average (arithmetic mean) of 92 points on a geography test out of a possible 100. If 10 of the students had a perfect score, what was the average score for the remaining students?
(A)58 (B)87 (C)88 (D)90 (E)92

SOLUTION: C

PROBLEM: Peter's income is directly proportional to the amount of time he works. If he earns \$27.00 for every 90 minutes of work, how many hours must he work to earn \$162.00 ?
(A)6 (B)9 (C)16.2 (D)18 (E)27

SOLUTION: B

PROBLEM: If 3 kilograms of rose petals are needed to produce 5 grams of perfume, how many kilograms of rose petals are needed to produce 870 grams of perfume?
(A)290 (B)522 (C)870 (D)1,450 (E)2,610

SOLUTION:
B

