In a sample of National college students, 30 percent are third year students and 60 percent are not second-year students. What fraction of those students who are not third-year students are second-year students?	Select the correct option
A) 3/4  B) 2/3  C) 4/7  D) 1/2  E) 3/7
= 40/70. = 4/7   my answer is 4/7 too
<result>C</result>
In a sample of National college students, 30 percent are third year students and 60 percent are not second-year students. What fraction of those students who are not third-year students are second-year students?