Hi there!
First, let's figure out what time he fell. This can be done by subtracting first 25 minutes, because that is the time that they took to load him, then 40 minutes, so 65 minutes total. Then, that will be the time that he fell. After finding the time that he fell, we can add 5 minutes to figure out when the police arrived.
WORK:
11:30 - 65 minutes = 10:25
10:25 + 5 = 10:30
ANSWER:
The police arrived at 10:30.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!