09:15:24 - 02:16:25
Understand the Problem
This appears to be a subtraction problem involving time, where we need to subtract 02 hours, 16 minutes, and 25 seconds from 09 hours, 15 minutes, and 24 seconds.
Answer
06:58:59
Answer for screen readers
06:58:59
Steps to Solve
- Set up the subtraction
Write the subtraction problem vertically, aligning the hours, minutes, and seconds:
09:15:24
- 02:16:25
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- Borrow from minutes to subtract seconds
Since 24 seconds is less than 25 seconds, we need to borrow 1 minute from the minutes column. 1 minute is equal to 60 seconds. So we borrow 1 minute from 15 minutes making it 14 minutes, and add 60 seconds to 24 seconds, giving us 84 seconds.
09:14:84 (Since 15 became 14, and 24 became 24+60=84)
- 02:16:25
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- Subtract the seconds
Subtract the seconds: $84 - 25 = 59$ seconds.
09:14:84
- 02:16:25
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59
- Borrow from hours to subtract minutes
Since 14 minutes is less than 16 minutes, we need to borrow 1 hour from the hours column. 1 hour is equal to 60 minutes. So we borrow 1 hour from 09 hours making it 08 hours, and add 60 minutes to 14 minutes, giving us 74 minutes.
08:74:84 (Since 09 became 08, and 14 became 14+60=74)
- 02:16:25
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59
- Subtract the minutes
Subtract the minutes: $74 - 16 = 58$ minutes.
08:74:84
- 02:16:25
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58:59
- Subtract the hours
Subtract the hours: $8 - 2 = 6$ hours.
08:74:84
- 02:16:25
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06:58:59
06:58:59
More Information
The result of subtracting 02 hours, 16 minutes, and 25 seconds from 09 hours, 15 minutes, and 24 seconds is 06 hours, 58 minutes, and 59 seconds.
Tips
A common mistake is forgetting to borrow when the number being subtracted is larger than the number it's being subtracted from. Also, it is important to remember to add 60 when borrowing from the next higher unit (minutes when subtracting seconds, hours when subtracting minutes), since there are 60 seconds in a minute and 60 minutes in an hour.
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