Answer: D. Be 9 hours ahead in time.
Explanation:
From the Greenwich Meridian which is at 0° longitude, every additional 15° represents an hour. If it is to the East, this is ahead of the Greenwich meridian and to the West is behind.
Assuming the time at the Greenwich is 12pm, the time at the country on 30°E longitude will be:
= 30 / 15
= 2 hours
= Greenwich time + Hours ahead
= 12 + 2
= 2 pm
The time at the 165°E will be:
= 165 / 15
= 11 hours
= Greenwich time + Hours ahead
= 12 + 11
= 11 pm
Time difference:
= 11 - 2
= 9 hours
Country at 165°E is 9 hours ahead of country at 30°E.
