The total number of students in different subjects of a college and the percentage of girls and boys are shown in the below table.
Girls students and boys students are NOT having multiple subjects.
| Subjects |
Number of Students |
Girls % |
Boys % |
| Mathematics | 840 | 40 | 60 |
| Chemistry | 220 | 70 | 30 |
| Physics | 450 | 30 | 70 |
| Biology | 200 | 80 | 20 |
What is the percentage of girl students in ents the college?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 45.9.
Total number of students = 840 + 220 + 450 + 200 = 1710
Total number of girls in mathematics = 40% of 840 = 336
Total number of girls in chemistry = 70% of 220 = 154
Total number of girls in physics = 30% of 450 = 135
Total number of girls in Biology = 80% of 200 = 160
Total number of girl students = 336 + 154 + 135 + 160 = 785
⇒ Percentage of girl students in ents the college = (785/1710) × 100 = 45.9