PLEASE EXPLAIN. I DO NOT GET IT!!!!!!!!!HOW DO YOU CALCULATE THIS?
5:05 PM SUBTRACT 1.9 HOURS?
1 h = 60 min
0.9 h = 54 min
1.9 h = 1 h 54 min
1 h = 60 min
write 5 h 05 min like :
5 h 05 min = 4 h + 60 min + 5 min = 4 h 65 min
5 h 05 min - 1.9 h = 4 h 65 min - 1 h 54 min = 3 h 11 min PM
0.9 h = 0.9 * 60 min = 54 min
Change 1.9 hours into a form we can use.
Let's break it into two parts. We know 1 hour is easy enough, and that will change the time to 4:05 PM (Subtract 1 hour from 5:05 PM).
For the 0.9 hour part, let's change this to minutes.
(0.9 hours)*(60 min / 1 hr) = 54 minutes.
Since we are at 4:05 PM, subtract 5 of the 54 min and we are at 4:00 PM and now need to subtract the remaining 49min, which 3:11 PM.
So 5:05 PM subtracting 1.9 hours is 3:11 PM. They key to this problem is getting the 1.9 hours into something we can use, and to break the large problem into smaller, managable problems.
To calculate the time 1.9 hours before 5:05 PM, you can follow these steps:
Step 1: Convert the time to a 24-hour format.
To do this, you need to understand the convention where PM times can be represented as hours in the range 13 to 23. So, in this case, 5:05 PM would be 17:05 in the 24-hour format.
Step 2: Subtract the hours.
Since 1.9 hours is less than 2 hours, it implies subtracting 1 hour and 54 minutes. Convert this to minutes for easier calculation: 1 hour * 60 minutes/hour + 54 minutes = 114 minutes.
Step 3: Subtract the minutes.
Subtract the calculated minutes (114) from the original time.
17:05 - 114 minutes = 15:11
Step 4: Convert the result back to 12-hour format if needed.
In this case, the result is 15:11, which is in the 24-hour format. To convert it back to the 12-hour format (AM/PM), subtract 12 from the hour if it is greater than 12.
15:11 is less than 12, so it remains as 15:11 PM.
So, subtracting 1.9 hours from 5:05 PM gives you 3:11 PM.