To find out how many minutes Caitlin read, we can calculate the time from 9:45 AM to 10:37 AM.
- From 9:45 AM to 10:00 AM is 15 minutes.
- From 10:00 AM to 10:37 AM is 37 minutes.
Now, we add these two time intervals together:
15 minutes + 37 minutes = 52 minutes.
Therefore, Caitlin read for 52 minutes.