One meaning of "eon" is "a very long time"; in this case, it isn't an exact amount of time. But if you refer to the meaning "a billion years", just multiply the number of years by 365 to get the days, and then multiply the result by 24, to get the number of hours. It is irrelevant whether you use a 24-hour clock, or a 12-hour clock.
12 hours - if the clock is accurate.
60 Minutes
about an hour
It will take 8000/10 = 800 hours.
You can take up to 12 aspirin in a 24 hour period.
12 hours
It depends on the type and configuration of the clock you are referring to
12 hours - if the clock is accurate.
60
60 Minutes
about an hour
It will take 2.58333... hours.
It depends on your speed:- if you drive at 100 miles per hour it will take you 5.81 hours. if you drive at 50 miles per hour it will take you 11.62 hours.
10 hour 10 hour
At one kilometer an hour 377 hours.
9 hours
give or take 25 hours (1 day, 1 hour)