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]: Tameka cleans her house every 7 days and does laundry every 5 days. In the next 315 days, how many times will she have to clean her house and do laundry on the same day?
(A)9 (B)12 (C)26 (D)45 (E)63
[A]: A


[Q]: A new airplane can travel at speeds up to 4,680 miles per hour. How many miles can the airplane travel in 10 seconds?
(A)1.3 (B)7.8 (C)13 (D)78 (E)130
[A]: C


[Q]: Tariq has $10 and wants to buy 21 oranges at $0.30 each and 12 apples at $0.50 each. If there is no sales tax, how much more money does he need?
(A)\$2.00 (B)\$2.30 (C)\$2.60 (D)\$12.00 (E)\$12.30
[A]:
B