Answer:To calculate the time difference between Brazil at 60°W and 15°E, we must first determine the number of time zones between them.
Because each time zone represents a 15-degree difference in longitude, we can divide the distance between the two locations (60°W - 15°E = 75°) by 15 to calculate the number of time zones that exist between them:
75 degrees / 15 degrees = 5 time zones
Brazil, at 60°W, is thus five time zones west of 15°E.
To convert 2:30am at 15°E to the corresponding time in Brazil at 60°W, subtract five hours from 2:30am.
So, at 60°W, the time in Brazil is:
2:30 a.m. + 5 hours = 9:30 p.m. (the previous day)
As a result, when it is 2:30am at 15°E, it is 9:30pm the previous day in Brazil at 60°W.
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