Answer:
0.51
Explanation:
Considering the residents aged 50 or over, there are:
- 507 high school only
- 2652 some college
- 1958 bachelor's
- 1392 master's
This means that there are a total of 3350 people out of the 6509 that meet the required conditions, and thus the answer is 3350/6509, which is about 0.51.