Answer: 9 hours and 12 minutes
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Step-by-step explanation:
Let's break the overall duration into these chunks
- From 6:30 AM to 7:00 AM is 30 minutes
- From 7:00 AM to 12:00 PM noon is 5 hours (since 12-7 = 5)
- From 12:00 PM noon to 3:00 PM is 3 hours
- From 3:00 PM to 3:42 PM is 42 minutes
Let's add up the minutes portions first
30+42 = 72 minutes
This is over 60 minutes, so we'll rewrite it like this
72 min = 60 min + 12 min = 1 hour, 12 min
The "12 min" is part of the final answer.
The "1 hour" will carry over.
The hours portions of 5 and 3 add to 8. Then tack on that 1 extra hour to get 8+1 = 9 hours.
Overall, the journey was 9 hours and 12 minutes
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Here's another approach:
The 12 hour time value of 3:42 PM is the same as 1542 in military or 24 hour time format. To convert any PM time to military time, add 12 to the hours portion (so 3+12 = 15 for instance). The minutes stays the same.
Once the PM time value is in military time, we subtract the starting and ending values
1542 - 0630 = 0912
The first part "09" indicates "9 hours". The second part "12" indicates "12 minutes.
We arrive at the same duration of 9 hours and 12 minutes
Side note: This assumes that all of the traveling occurs on the same day.