Study the given pie chart and answer the question that follows.

If 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?

12 : 11

Number of boys in C = \(\frac{6}{11}\) × \(\frac{79.2}{360}\) × 9000

= 1080

Number of Girls in B = \(\frac{11}{18}\) × \(\frac{64.8}{360}\) × 9000

= 990

Required ratio ,    1080  :  990

= 12  :   11