Multiple choice general knowledge math & puzzles

My flight takes of at 2pm from a place at 18N 40E and landed 10 Hrs later at a place with coordinates 36N40W. What is the local time when my plane landed?

  1. 8.00 pm

  2. 6.00 pm

  3. 12.00 am

  4. 6.40 pm

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The time difference between 40E and 40W is 80 degrees. Since 15 degrees = 1 hour, 80 degrees = 5 hours 20 minutes. Traveling west, you subtract time. Departure: 2 PM (40E). Local time at 40W then: 8:40 AM. Add 10 hours flight time: 6:40 PM.