A total of \(800\) students were asked whether they found two subjects, \(M\) and \(R,\) interesting. Each answer was

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-----------------YES-----NO----UNSURE
Subject \(M\) ---500-----200-----100
Subject \(R\) ----400-----100-----300

A total of \(800\) students were asked whether they found two subjects, \(M\) and \(R,\) interesting. Each answer was either "yes" or "no" or "unsure", and the numbers of students who gave these answers are listed in the table above. If \(200\) students answered "yes" only for subject \(M,\) how many of the students did not answer "yes" for either subject?

A. 100
B. 200
C. 300
D. 400
E. 500

Answer: B

Source: GMAT Prep
Source: — Problem Solving |