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# If the time is 4:30, what time was it 19 hours ago?

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- geezerLv 711 months ago
Make it easier.

Don't work back 19 hours

Work foward 5 hours

because 24 - 19 = 5

4:30 becomes 9:30

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- JimLv 711 months ago
Our hours are base 24, so -19 is the same as add 5

4:30 -19 = 4:30 + 5 = 9:30

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- daniel gLv 711 months ago
Wow, I am getting slow in my days, took nearly 6 seconds to work this in my head.

The time would have been 9:30 in the opposite meridian.

14:30 in 24 hour format.

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- Mike GLv 711 months ago
24 hours ago = 4:30 am or pm

19 hours ago = 9:30 am or pm

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- llafferLv 711 months ago
19 hours before 4:30.

Let's add 24 hours to 4:30, then subtract 19 from it:

28:30 - 19:00 = 9:30

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- electron1Lv 711 months ago
30 minutes is one half of an hour. Let’s subtract these two numbers.

t = 19 – 4.5 = 14.5 hours

One day is 24 hours.

24 – 14.5 = 9.5

The time is 9:30 on the next day.

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- Anonymous11 months ago
Wow. I didn't realize math was that hard. 9:30.

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