In a class of students, 2/3 of the number of girls is equal to 1/5 of the total number of students. What is the ratio of boys to girls in the class?
Choose the correct choice from the following.
A) 1 / 3  B) 2 / 3  C) 4 / 3  D) 5 / 3  E) 7 / 3

Rationale: ( 2 / 3 ) g = ( 1 / 5 ) ( b + g ) 10 g = 3 b + 3 g 7 g = 3 b b / g = 7 / 3 . the answer is e .
Answer: E