6 hours and 31 minutes
90
3 hours and 6 minutes
2:45 + 3:57 = 6 hours 42 minutes
8 hours and 20 mins
Three hours is 180 minutes. 90 minutes is a half of this.
8hours 15 minutes
((1 hour 32 minutes) + (2 hours)) + (3 hours 56 minutes) = 7 hours 28 minutes
90 minutes is 3/2 hours.
6 hours and 31 minutes
5 hours and 55 minutes.
(2 hours 45 minutes) + (3 hours 58 minutes) = 6 hours 43 minutes.
To convert 90 minutes to hours, you divide by 60 (since there are 60 minutes in an hour). So, 90 minutes is equal to 1.5 hours. To represent this as a fraction, you can write it as 1.5/1, which simplifies to 3/2 in fractional form. So, the fraction for 90 minutes in terms of hours is 3/2.
90 min/8 hours = 90 min/480 min = 3/16
1/2
90
2 hours and 51 min.