Directions: Study the given pie chart and answer the question that follows:
Distribution(degree wise) of students studying in schools A, B, C, D, and E.
Total no. of students = 9000
The ratio of the number of boys to that of girls in school C is 6 : 5 and that in school B is 7 : 11, then what is the ratio of the number of boys in school C to the number of girls in school B?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 12 : 11
The number of students in school C = (79.2/360) × 9000
⇒ The number of boys in school C = (79.2/360) × 9000 × (6/11) ...........(1)
The number of students in school B = (64.8/360) × 9000
⇒ The number of girls in school B = (64.8/360) × 9000 × (11/18) ............(2)
required ratio = equation (1)/equation (2)
= (79.2 × 6 × 18)/(11 × 64.8 × 11)
= 12/11