SOLUTION: if the longitude of Tokyo is 139 degree E and that Manila is 121 degree E, what is the time difference between Tokyo and Manila?

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Question 770251: if the longitude of Tokyo is 139 degree E and that Manila is 121 degree E, what is the time difference between Tokyo and Manila?
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
1 hour = 15 degrees
Then 18 degrees = x
x = 18/15 = 1.2
Answer: 1.2 hours (1 hour and 12 minutes)
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Thanks