what is the longitude of a town "Y" whose time is 1:00pm when Greenwich mean time is 5:00am ?

http://iranpoliticsclub.net/time-currency/index.htm

what is the longitude of town b whose time is 8:00am when London is 4:00pm?

To find the longitude of a town given its time difference from Greenwich Mean Time (GMT), you can use the concept of time zones. Each time zone represents approximately 15 degrees of longitude.

In this case, the time difference between the town "Y" and GMT is 6 hours. Since each hour corresponds to 15 degrees, we can calculate the longitude as follows:

Longitude = Time Difference (in hours) × Degrees per Hour
Longitude = 6 hours × 15 degrees/hour
Longitude = 90 degrees

Therefore, the longitude of town "Y" is 90 degrees.