In a primary school, the ratio of the number of girls to boys is 5 : 8. If there are 160 girls, the total number of students in the college is:	Choose the correct choice from the following answers.
A) 100	B) 250	C) 260	D) 300	E) 350

Rationale: let the number of girls and boys be 5 x and 8 x . total number of students = 13 x = 13 x 32 = 416 . answer : d
Answer: D