There are 60 seconds in 1 minute and 60 minutes in 1 hours, so...
1 minute = 60 seconds therefore 24 minutes = 60 x 24 which is 1440 seconds
1 hour = 60 x 60 seconds, which is 3600 seconds, so 2 hours = 3600 x 2 which is 7200 seconds. Therefore 2 hours and 24 minutes = 1440 seconds plus 7200 seconds, which is 8640 seconds.
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To calculate how many seconds in 24 hours, multiply the number of hours by 60 and multiply that number again by 60.
To calculate the number of seconds in a day, you multiply the number of hours in a day (24) by the number of minutes in an hour (60) and then by the number of seconds in a minute (60). So, there are 24 * 60 * 60 = 86,400 seconds in a day.
5 hours 24 minutes is 19,440 seconds.
24 hours, 0 minutes, 0 seconds.
0.64 hours = (0.64 times 60) minutes = 38.4 minutes But 0.4 minutes = (0.4 times 60) seconds = 24 seconds So 0.64 hours = 38 minutes and 24 seconds.