Answer:
11:59 AM
Explanation:
We must determined the halfway point of 10:53 AM and 1:05 PM. The total time between those to times can be determine by changiing 1:05 to 13:05. We can subtract the times:
=13:05-10:53=2:12
The total time was 2 hours and 12 minutes. We can then add half of this time to 10:53 PM.
=10:53+1:06=11:59
The time the phone rang was 11:59 AM