Answer:
Step-by-step explanation:
Greg has driven for 2 1/4 hours. Converting 2 1/4 hours to improper fraction, it becomes 9/4 hours.
Diana has driven for 3 1/5 hours. Converting 3 1/5 hours to improper fraction, it becomes 16/5 hours.
Abby has driven for 1 1/2 hours. Converting 1 1/2 hours to improper fraction, it becomes 3/2 hours.
Jason has driven for 2 1/60 hours. Converting 2 1/60 hours to improper fraction, it becomes 121/60 hours.
Total number of hours driven is
9/4 + 16/5 + 3/2 + 121/60
Taking 60 as the LCM and multiplying through by 60, it becomes
(135 + 192 + 90 + 121)/60 = 538/60
Converting to mixed fraction, it becomes
8 58/60 hours
