The number of students in three different streams in different colleges is given below.
|
Stream→ College↓ |
Science |
Arts |
Commerce |
|
1 |
1550 |
1900 |
2200 |
|
2 |
1800 |
1700 |
2400 |
|
3 |
1630 |
1850 |
2250 |
|
4 |
1700 |
1250 |
3250 |
The difference between the average number of students per college in commerce and the average number of students per stream in college 2 (Correct to 2 decimal places) is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 558.33.
⇒ The total number of students per college in commerce = 2200 + 2400 + 2250 + 3250 = 10100
⇒ The average number of students per college in commerce = 10100/4 = 2525
⇒ The total number of students per stream in college 2 = 1800 + 1700 + 2400 = 5900
⇒ The average number of students per stream in college 2 = 5900/3 = 1966.66
Hence, The required difference = 2525 - 1966.66 = 558.34