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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 a, b, and c are numbers such that a/b = 3 and b/c = 7, then (a+b)/(b+c) is equal to which of the following?
(A) 7/2
(B) 7/8
(C) 3/7
(D) 1/7
(E) 21
