The average (arithmetic mean) score on a test taken by 10 students was x. If the average score for 5 of the students was 8, what was the average score, in terms of x, for the remaining 5 students who took the test?
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A2x-8
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Bx-4
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C8-2x
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D16-x
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E$${8}-\frac{x}{2}$$