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Read the following SAT test question and then click on a button to select your answer.
The population of Norson, the largest city in Transitania, is 50 percent of the rest of the population of Transitania. The population of Norson is what percent of the entire population of Transitania?
(A) 20%
(B) 25%
(C) 30%
(D) 33 and (1/3)%
(E) 50%