Every student in a room is either a junior or a senior. There is at least one junior and at least one senior in the room. If 2/3 of the juniors is equal to 1/2 of the seniors, what fraction of the students in the room are juniors?	Select the correct option
A) 3/20 B) 1/3 C) 3/7 D) 2/7 E) 7/2
Let total number of juniors= J   total number of seniors =S   (2/3) J = (1/2) S   =&gt; S = 4/3 J   Total number of students = J+S = (7/3) J   Fraction of the students in the room are juniors = J/(J+S) = J/[(7/3) J]   =3/7   Answer 3/7
<result>C</result>
Every student in a room is either a junior or a senior. There is at least one junior and at least one senior in the room. If 2/3 of the juniors is equal to 1/2 of the seniors, what fraction of the students in the room are juniors?