In a traffic study, a survey of 50 moving cars is done and it is found that 20% of these contain more than one person. Of the cars containing only one person, 60% of these are driven by women. Of the cars containing just one person, how many were driven by men?
(A) 10 (B) 16 (C) 20 (D) 30 (E) 40
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Source: CEMC, University of Waterloo,
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