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Before time zones were created, each city had it's own time. A city's time depended on it's latitude. After time zones were created, they rounded the times off to the nearest hour. Some countries wanted to be more accurate and chose to round to the nearest 30 min. There are even places where time differs by 40 min!
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Earn +20 ptsQ: How can there be a half hour time difference rather than a whole hour?
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Continue Learning about Math & Arithmetic
What is difference between a half hour and half an hour?
40 minutes is what hour
What is the difference between the number of minutes in an hour and a half and the number of seconds in a minute and a half?
there isn't a difference
What difference does it make if the decimal is placed before or after the number?
If the number is before the decimal, it is a whole number. The numbers after the decimal represent fractions of whole numbers. For example if you had to work 8.5 hours, you would work 8 whole hours plus one half hour.
What is an hour in a half?
A half of an hour is 30 min. and hour and a half is 90 min.
A train completes half a trip at 30 miles per hour and the other half at 60 miles per hour If the whole trip was 20 miles how many minutes did the train take to complete the trip?
30 minutes.
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