In a college, the ratio of the number of boys to girls is 8 : 5. If there are 300 girls, the total number of students in the college is  Choices: A) 420 B) 520 C) 620 D) 780 E) 820

Rationale: "explanation : let the boy are 8 x and girls are 5 x = > 5 x = 300 = > x = 60 total students = 8 x + 5 x = 13 x = 13 ( 60 ) = 780 option d"
Answer: D