1145
45 minutes before 6:30 PM is 5:45 PM.
There are (30 + 1440k) minutes, where k is an integer.
Half an hour before midnight would be 11:30 PM. This is because there are 60 minutes in an hour, so half an hour before midnight (12:00 AM) would be 30 minutes before, which is 11:30 PM.
2:42 pm = 2:12 pm + 0:30
2:42 pm = 2:12 pm + 0:30
7 hours and 30 minutes
From 5 PM to 9:30 PM, there are 4 hours and 30 minutes. This includes the full 4 hours from 5 PM to 9 PM, plus an additional 30 minutes to reach 9:30 PM.
From 7:30 AM to 4:00 PM is a total of 8 hours and 30 minutes. To break it down, there are 8 hours from 7:30 AM to 3:30 PM, plus an additional 30 minutes from 3:30 PM to 4:00 PM.
The time from 6 AM to 12:30 PM is 6 hours and 30 minutes. To break it down, there are 6 hours from 6 AM to 12 PM, and then an additional 30 minutes from 12 PM to 12:30 PM.
110 minutes before 7 pm is 5:10 pm.
The time from 10:30 AM to 7:00 PM is 8 hours and 30 minutes. To break it down, from 10:30 AM to 6:30 PM is 8 hours, and then from 6:30 PM to 7:00 PM is an additional 30 minutes.
To calculate the time from 8:30 AM to 5:50 PM, first find the difference in hours and minutes. From 8:30 AM to 5:30 PM is 9 hours, and then from 5:30 PM to 5:50 PM is an additional 20 minutes. Therefore, the total time from 8:30 AM to 5:50 PM is 9 hours and 20 minutes.