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.

Q: A bag contains two white marbles, four blue marbles, and an unknown number of black marbles. When one marble is drawn from the bag at random, the probability that the marble is black will be \(\frac { 1 } { 3 } \). How many black marbles are in the bag?
(A)3 (B)4 (C)5 (D)6 (E)8

A: A
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Q: There are 12 men on a basketball team, and in a game 5 of them play at any one time. If the game is 1 hour long, and if each man plays exactly the same amount of time, how many minutes does each man play?
(A)10 (B)12 (C)24 (D)25 (E)30

A: D
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Q: A gas tank with a capacity of \(g\) gallons is empty. A pump can deliver \(h\) gallons of gas every \(t\) seconds. In terms of \(g\), \(h\) and \(t\), how many seconds will it take this pump to fill the tank?
(A)\(\frac { g } { ht } \) (B)\(\frac { t } { gh } \) (C)\(\frac { gh } { t } \) (D)\(\frac { gt } { h } \) (E)\(\frac { h } { gt } \)

A:
D
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