Here are the approximate longitudes of the following 2 cities.
New York- 74° W.
Cairo- 31° E.
Find their approximate time relative to the Greenwich Mean Time (GMT).

GMT + 2, GMT - 5

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GMT - 5, GMT - 2

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GMT + 2, GMT + 5

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GMT - 5, GMT + 2

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Solution

The correct option is D GMT - 5, GMT + 2
One hour of time difference corresponds to 15° of longitude (360°/24 hours = 15°/hour). Therefore, New York corresponds to approximately 5 hours and Cairo to 2 hours of time difference relative to GMT. Also, New York is behind, and Cairo is ahead of GMT.

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