The strength of a school is 640, with the number of boys being 400. Find the ratio of girls to boys.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 3 : 5.
Given that, total number of students in school = 640
Number of boys = 400
⇒ Number of girls = 640 - 400
⇒ 240
Required ratio = 240 : 400
⇒ 3 : 5