Answer:
When it is 9AM at 75º W, it will be 7AM at 105º W.
Step-by-step explanation:
To determine what will be the time at 105 degrees West when it is 9AM at 75 degrees West, the following must be taken into consideration:
The 105º W meridian passes through the central zone of Canada, the United States, and Mexico, and then enters the Pacific Ocean. Its time zone is -07: 00 UTC.
In turn, the 75º W meridian passes through a greater number of countries, and through major cities such as New York, whose time zone is -05: 00 UTC.
Therefore since -7 - (-5) is equal to -2, when it is 9AM at 75º W, it will be 7AM at 105º W.