In a class of students, the ratio of girls to boys is 2:5. If 4 more girls joined the class, the ratio would be 1:2. How many students are in the class?	Choose the correct choice from the following answers
A) 42
B) 49
C) 50
D) 54
E) 56
Let x be the number of students in the class.   (2/7)*x=(1/3)(x+4)-4   6x=7x+28-84   x=56   The answer is 56.
<result>E</result>
In a class of students, the ratio of girls to boys is 2:5. If 4 more girls joined the class, the ratio would be 1:2. How many students are in the class?