In everyday, non-mathematical usage then it is preferable to write 1.5 hours.
In mathematics then either expression is acceptable as there is no confusion regarding the number and the unit of measurement is clearly identifiable.
45 miles in three hours at 15 miles per hour.
It is: 225/15 = $15 per hour
2 hours
3 hours 15 minutes minus 1 hour 35 minutes = 1 hour and 40 minutes
Yes, to be precise: 7.25 HOURS is the same as 7 hours and 15 minutes. 7.25 hours is 7 hours plus 0.25 hours. In words, 0.25 hours is one-fourth of an hour, and one-fourth of an hour is equal to 15 minutes.
Both are correct.
45 miles in three hours at 15 miles per hour.
15 minutes is 1/4 hour or 0.25 hours.
15 hours 20 minutes(920 divided by 60(minutes to an hour) equals 15.33333, 15 hours and a third; a third of an hour is 20 min, 15 hours and 20 minutes.)
a quarter of an hour is 15 minutes
It is: 225/15 = $15 per hour
15 minutes (a quarter of an hour)In decimal .25 is one quarter. A quarter of an hour is 15 minutes. So in 3.25 hours, the .25 means 15 minutes.
2 hours
1hour = 60 minutes 3 hours 4 minutes:= 3 hours + 4 minutes= 3 hours + 4/60 hour= 3 hours + 1/15 hour= 3 1/15 hours= 46/15 hours in fraction
15% of 8 hours = 15% * 8 = 0.15 * 8 = 1.2 hours or 1 hour 12 minutes
3 hours 15 minutes minus 1 hour 35 minutes = 1 hour and 40 minutes
Yes, to be precise: 7.25 HOURS is the same as 7 hours and 15 minutes. 7.25 hours is 7 hours plus 0.25 hours. In words, 0.25 hours is one-fourth of an hour, and one-fourth of an hour is equal to 15 minutes.