Why is AM and PM important on a clock?
A normal clock has twelve hours and it goes through two cycles of that period every day. There are occasions when you need to know whether it the time referred to is in the fist cycle (midnight to noon = am) or the second (noon to midnight = pm).
How many hours from 730 to 615?
From 7:30am to 6:15pm is 10 hours and 45 minutes.
From 7:30pm to 6:15am is 10 hours and 45 minutes.
From 7:30pm to 6:15pm is 22 hours and 45 minutes.
From 7:30am to 6:15am is 22 hours and 45 minutes.
How many hours are between 930 and 345?
There are 6 1/4 hours between 9:30 am and 3:45 pm, or between 9:30 pm and 3:45 am.
There are 18 1/4 hours between 9:30 am and 3:45 am, or between 9:30 pm and 3:45 pm.
How many minutes are in 7 ½ hours?
There are 7.5 * 60 minutes in 7 and 1/2 hours, for a total of 450 minutes.
Since there are 60 minutes in an hour, you would multiply 60 (hours) x 37 (minutes), which would give you 60 x 37 = 2,220 minutes.
How many hours and minutes is it from 345 p.m. On Tuesday to 630 a.m. On Wednesday?
There are 14.75 hours, or 14 hours and 45 minutes, from 3:45 PM on Tuesday to 6:30 AM on Wednesday.