Walking across campus, a student interviewed a group of students. 25% of the students took a finance class last semester, 51% took a marketing class last semester, and 40% took neither a finance nor a marketing class last semester. What percent of the students in the group took both a finance and a marketing class?\nOptions:\n(A) 60%\n(B) 50%\n(C) 25%\n(D) 16%\n(E) 10% Stream of consciousness first, then make a decision:
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{Total} = {finance} + {marketing} - {both} + {neither}\n100 = 25 + 51 - {both} + 40\n{both} = 16%.
Thus, the answer is (D).
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