We will discuss here about the addition of hours, minutes and seconds.
Let us consider some of the examples on adding time.
Let us consider some examples:
1. Add 3 hr. 25 min. 15 sec. and 5 hr. 20 min. 25 sec.
2. Add 5 hr. 45 min. 12 sec. and 7 hr. 50 min. 24 sec.
= 12 hr. 1 hr. + 35 min. + 36 sec. = 13 hr. 35 min. 36 sec. |
12 hr. 95 min. 36 sec. = 12 hr. + (60 min. + 35 min.) + 36 sec.
= 12 hr. 1 hr. + 35 min. + 36 sec. = 13 hr. 35 min. 36 sec. |
3. Add 30 hr. 45 min. 45 sec. and 15 hr. 35 min. 17 sec.
= 45 hr. 1 hr. 20 min. 1 min. 11 sec. = 46 hr. 21 min. 11 sec. |
45 hr. 80 min. 71 sec. = 45 hr. + (60 min. + 20 min.) + (60 sec. + 11 sec.)
= 45 hr. + 1 hr. + 20 min. + 1 min. + 11 sec. = 46 hr. 21 min. 11 sec. |
4. Add 24 hr. 30 min. 20 sec. and 18 hr. 37 min. 54 sec.
= 42 hr. 1 hr. 7 min. 1 min. 14 sec. = 43 hr. 8 min. 14 sec. |
42 hr. 67 min. 74 sec.
= 42 hr. + (60 min. + 7 min.) + (60 sec. + 14 sec.) = 42 hr. + 1 hr. + 7 min. + 1 min. + 11 sec. + 14 sec. = 43 hr. 8 min. 14 sec. |
5. Add 5 hours 40 minutes and 2 hours 15 minutes.
Step I: Add the minutes. 40 + 15 = 55 minutes Step II: Add the hours 5 + 2 = 7 hours |
Answer: 2 hours 15 minutes. |
6. Add 8 hours 35 minutes 40 seconds and 6 hours 30 minutes and 45 seconds.
Step I: Add the seconds. 40 + 45 = 85 seconds = 60 seconds + 25 seconds = 1 minute 25 seconds Step II: Write 25 under seconds and carry 1 to minutes. Step III: Add the minutes. 1 + 35 + 30 = 66 minutes = 66 minutes + 6 minutes = 1 hour 6 minutes Step IV: Write 6 under minutes and carry 1 to hours. Step V: Add the hours. 1 + 8 + 6 = 15 hours Write 15 under hours. |
Answer: 15 hours 6 minutes 25 seconds |
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