For example if it's 6:03 now and something happened at 11:25 last night how do you calculate how long ago it happened?
2006-11-03 13:42:48 · 5 answers · asked by Lleh 6 in Science & Mathematics ➔ Mathematics
Use Clock Arithmetic.
11:25pm = 23:25
6:03 - 23:25 = -17:22
take 24:00 - 17:22 = 6:38
In this case of Clock Arithmetic, all values are between 0:00 and 23:59. If not, you have to adjust by 24 hrs.
hint: unit circle concept
-270 deg = 90 deg
you take 360 - 270 = 90
2006-11-03 13:46:43 · answer #1 · answered by Poncho Rio 4 · 0⤊ 1⤋
Since this happened between two different days, you can't just subtract. An alternative would be counting with your clock. :)) lol
This is counting with days: (assuming November 4) (use 24 hours: 11+12 = 23)
dd hh:mm:ss
04 06:03.00
- 03 23:25:00
_____________
6h 38m
You could use MS Excel for this one >:)
2006-11-03 21:56:05 · answer #2 · answered by Chie 5 · 0⤊ 0⤋
day hour minute
n+1 6 03
n 23 25
to calculate the minute
25 from 63 leaves 38 (carry 1)
to calculate the hour
24 from 30 leaves 6 (carry 1)
to calculate the day
(n+1) from (n+1) leaves 0
so 0 days, 6 hours, 38 minutes
2006-11-03 23:43:15 · answer #3 · answered by paladin 1 · 0⤊ 0⤋
Subtract.
2006-11-03 21:56:44 · answer #4 · answered by Anonymous · 0⤊ 0⤋
you find out how many hours ago it happened and multiply it by 60. if you need hours then you divide that number by 60.
2006-11-03 22:01:34 · answer #5 · answered by Josh 2 · 0⤊ 0⤋