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.

[EX Q]: In a certain country, the ratio of people 50 and over to people under 50 is 3 to 5. What percent of the population is under 50?
(A)30 (B)37.5 (C)50 (D)60 (E)62.5
[EX A]: E

[EX Q]: It takes 5 complete turns of the crank to raise a fishing rod hook 2 feet. At this rate, how many turns will it take to raise the hook 4.4 feet?
(A)4.4 (B)11 (C)22 (D)33 (E)44
[EX A]: B

[EX Q]: A bicyclist riding at 12 miles an hour for 2 hours travels twice the distance a hiker travels walking at 4 miles an hour for how many hours?
(A)2 (B)3 (C)4 (D)5 (E)6
[EX A]:
B