Correct Answer - Option 3 : 3 ∶ 2
Calculations:
Pass percentage of school B = 32%
Pass percentage of boy in school B = (3/8) of 32%
⇒ 12%
Pass percentage of school C = 24%
Pass percentage of boys in school C = (1/3) of 24%
⇒ 8%
Boys percentage of school B : Boys percentage of school C = 12 : 8
⇒ 3 : 2
∴ The correct choice is option 3.