1 hour + 75 minutes = 2 hours 15 minutes... That's 2.25 hours as a decimal.
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It is 75 minutes.
0.25 = 1/4 1 hour = 60 minutes 1/4 hour = 15 minutes 1 and 1/4 hour = 75 minutes
Oh, dude, 75 percent of an hour is like 45 minutes. You just take 60 minutes, which is a whole hour, and then calculate 75 percent of that, which is 45 minutes. So, if you need to kill time, you've got 45 minutes to spare!
There are 60 minutes in 1 hour. Plus 15 minutes in one fourth hour. Adding them together makes 75 minutes.
0.0075