Liam worked 5 hours 30minutes on monday and 4 hours 45 minutes on wednesday. how many total hours did liam work on monday and

5 hours + 4 hours = 9 hours
30 minutes + 45 minutes =75 minutes
60 minutes in an hour, so 75 minutes =1 hour and 15 minutes, or 1.25 hours
9 hours + 1.25 hours =10.25 hours or 10 hours and 15 minutes. 

9 hours and 15 minutes. 5+4=9, 45+30= 75, 75-60= 15

The correct answer is d, hope this