Question

Comprehension

Based on the data in the table, answer the questions that follow

The following table embodies the details about the students of the different departments' A, B and C in a University for participating in the blood donation camp.

Participation in Blood Donation Camp - Data

Department	Percentage of Girls	Percentage of blood donating Girls*	Number of blood donating Boys*
A	25%	40%	48
B	40%	50%	75
C	30%	70%	39

*-out of total blood donors

1. 32
2. 130
3. 55
4. 48

Answer 1

Correct Answer - Option 1 : 32

Given:

*-out of total blood donors

The number of girls in the department 'A'  donated blood = 40%     (∵ *-out of total blood donors)

Number of donating boys = 48

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 blood donating Boys in department A = 60%           (∵ 100% - 40%)

Hence, 

60% of department A = 48

100% of department = 48× 100/60 = 80

Total number of students in department A who is donating blood = 80 

The number of girls in the department 'A' donated blood = 40% of 80

⇒ 40 × 80/100 = 32

∴ The number of girls in the department 'A'  donated blood is 32