Correct Answer - Option 4 : 200
Given:
According to the table,
The number of boys blood donated in department B = 75
Boys from department B doesn't donate blood = 45
Calculations:
Department |
percentage of girls |
percentage of blood donating girls* |
number of blood donating Boys* |
percentage of blood donating boys |
number of blood donating girls |
A |
25% |
40% |
48 |
60% |
32 |
B |
40% |
50% |
75 |
50% |
75 |
C |
30 |
70% |
39 |
30% |
91 |
The number of boys in department = 75 + 45 = 120
Percentage of the girl in department B = 40%
Percentage of boy in department B = 100% – 40% = 60%
60% of the students = 120
100% students in department B = 120 × 5/3 = 200
∴The total number of students in department 'B' is 200