The question mentions that the local time in Allahabad, located at 82° 30` east longitude, is 6:00 am on Sunday. The question then asks for the local time in Florida, which is located at 82° west longitude.
When we move westward in longitude, we subtract hours. Since Allahabad is ahead of Florida in terms of longitude (eastern side), the local time in Florida would be behind Allahabad`s local time.
To calculate the time difference, we can subtract the longitudes of both places. In this case, 82° 30` - 82° = 0° 30`. Each degree of longitude represents approximately 4 minutes of time. So, 0° 30` * 4 minutes = 2 hours.
Since Allahabad is 2 hours ahead of Florida, we need to subtract 2 hours from 6:00 am on Sunday, which gives us 4:00 am on Sunday.
Therefore, the correct local time in Florida (82° west longitude) would be 4:00 am on Sunday.
Option 1, which states 6:58 pm of Saturday, is incorrect. The correct answer is option 3, 6:58