Discussion
Consider the percentage of students of different schools involved in various activities.
| School→ Activities↓ | SS | BS | CS | DS |
|---|---|---|---|---|
| Games | 25 | 30 | 20 | 23 |
| Music | 15 | 25 | 25 | 20 |
| Academic | 30 | 20 | 25 | 15 |
| Dance | 25 | 15 | 22 | 30 |
The activities in descending order of average number of students is:
Answer: A
The order is Games, Dance, Academic, Music. Averaging the four schools for each activity:
\[ \text{Games} = \frac{25 + 30 + 20 + 23}{4} = 24.5 \]\[ \text{Dance} = \frac{25 + 15 + 22 + 30}{4} = 23 \]\[ \text{Academic} = \frac{30 + 20 + 25 + 15}{4} = 22.5 \]\[ \text{Music} = \frac{15 + 25 + 25 + 20}{4} = 21.25 \]Descending, that is Games, Dance, Academic, Music, which is option A and not the orders in B, C and D.
The question asks for the average number of students, which is taken to be the average of the four percentage figures for each activity, because all the schools are compared on the same percentage scale. Dance has a higher average than Academic only because DS has 30 in dance against 15 in academic, which is why Dance sits between Games and Academic.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development