There are 900 seconds in 15 minutes. (15 minutes is a quarter of an hour) You find this out by multiplying 60 (seconds in a minutes) by 15 (minutes).....HOPE THIS HELPED! :)
3 hours = 10800 seconds there the answer is 10815 seconds.
1 hour 15 minutes is 4,500 seconds.
A quarter hour = 15 minutes = 15*60 = 900 seconds.
15 × 60 = 900 minutes.Note: there are 60 seconds to a minute, and 60 minutes to an hour.
there are 60 seconds in one minute; 3600 seconds in one hour at 1 hr 15 minutes that is 3600 + 15x60 = 4500 seconds
0.25 hour = 15 minutes 1 minute = 60 seconds therefore 15 x 60 = 900 seconds.
5475 seconds is 1 hour 31 minutes and 15 seconds.
480 seconds = 8 minutes = 2/15 (0.1333...) of an hour.
There are 60 minutes in an hour and since "half an hour" is half of an hour, it will contain 30 minutes. Simply divide 60 by 2 to get the answer.
9435 seconds 60 seconds = 1 minute 9435 seconds = 9435 / 60 = 157 minutes 15 seconds 60 minutes = 1 hour 157 minutes = 157 / 60 minutes = 2 hours 37 minutes 15 seconds
7.13 x 15 = 106.95 minutes = 1 hour 46 minutes 57 seconds.(This solution is baste on 60 minutes per hour and 60 seconds per minute.)