Study the given table and answer the question that follows.
|
Institution |
Girls |
Boys |
Teachers |
|
School |
3000 |
2500 |
690 |
|
College |
9000 |
11000 |
1500 |
|
University |
15000 |
16000 |
2000 |
What is the ratio of college teachers to school girls?
1
2 : 1
2
3 : 15
3
1 : 2
4
1.5 : 30