প্রশ্ন সংশোধন করুন
প্রশ্ন:
The ratio of boys and girls in a class is 3 : 2. If 10% of boys and 15% of girls failed in an examination, the percentage of passed students is :
The ratio of boys and girls in a class is 3 : 2. If 10% of boys and 15% of girls failed in an examination, the percentage of passed students is :