4
To convert 1230 minutes into hours, divide 1230 by 60 (since there are 60 minutes in an hour). This gives you 20.5 hours. Therefore, 1230 minutes is equivalent to 20 hours and 30 minutes.
3.5 hours.
It is 430 minutes.
20% of 430= 20% * 430= 0.2 * 430= 86
The prime factors of 1230 are: 2 x 3 x 5 x 41
8 hours.
4 + 24k where k is any integer.
The time from 0530 to 1230 is 7 hours. To calculate this, you can subtract 0530 from 1230: 1230 - 0530 = 0700, which equals 7 hours.
To convert 1230 minutes into hours, divide 1230 by 60 (since there are 60 minutes in an hour). This gives you 20.5 hours. Therefore, 1230 minutes is equivalent to 20 hours and 30 minutes.
3.5 hours.
20.5 hours.
Four
4
It is 4 hours.
201/2 hours exactly.
9 hours and 30 minutes.
1960