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Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
If Kelly buys t pens priced at 2 dollars each and u pens priced at 4 dollars each, which of the following expresses, in terms of t and u, the average (arithmetic mean) price, in dollars, of these pens?
(A) (3t) + (3u)/(t + u)
(B) (3t) + (3u)/(tu)
(C) (3tu)/(t + u)
(D) ((2t) + (4u))/(t + u)
(E) ((2t) + (4u))/(tu)
