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When the local time is 2.00 p.m at longitude 45°E, what is the longitude of a place whose local time is 10.30 a.m?

Answer Text:
Time difference =
1400 hrs – 1030hrs
= 0330 hrs
= 3½ hrs
- in to minutes
=7/2 *60 = 210 min


-We find the longitude
If 10 = 4min
? = 210min
10 * 210/4 = 52.50
-Therefore the Difference in longitude is

52.50 – 450 = 7.50
Longitude is 7.5W