If 3/4 of the Police employees are not graduates, the ratio of graduates to non-graduate employees in the police department is?

3:7

3:4

1:3

None of these

Given:

3/4 of the police employees are not graduates.

This means:

1/4 of the police employees are graduates.

To find the ratio of graduates to non-graduate employees:

Graduates : Non-graduates = 1/4 : 3/4

Simplify the ratio:

Graduates : Non-graduates = 1 : 3