In an exam, 320 boys and 180 girls appeared. 60% of boys and 80% of girls passed. What percentage of students failed?

Correct option is A

Given:
- Total boys = 320
- Total girls = 180
- Passing percentage of boys = 60%
- Passing percentage of girls = 80%
Formula Used:
1. Number of students passing = Total students × Passing percentage
2. Total students failed = Total students - Total students passing
3. Percentage of students failed =
Solution:
1. Calculate the number of boys who passed: Boys passing = 320 × (60/100) = 192
2. Calculate the number of girls who passed: Girls passing = 180 × (80/100) = 144
3. Total students who passed: Total passing students = 192 + 144 = 336
4. Total students: Total students = 320 + 180 = 500
5. Total students who failed: Total students failed = 500 - 336 = 164
6. Percentage of students who failed: Percentage failed = (164/500) × 100 = 32.8%