If the time at a particular place at 45 degree West Latitude is 12 PM. What will be the time at Greenwich?

3 PM 9 AM 6 PM 6 AM

3 PM

The correct answer is Option (1) - 3 PM Longitude lines determine time zones. As we move eastward, time increases by 4 minutes for every degree of longitude. Conversely, moving westward, time decreases by 4 minutes for every degree. 1 degree = 4 minutes, so 45 degree = 180 minutes. Given that the location is 45 degrees west of Greenwich, it means it is 3 hours behind Greenwich Mean Time (GMT). If the time at the location is 12 PM, then the time at Greenwich would be 3 hours ahead of that. Thus, the time at Greenwich will be 3 PM.