Respuesta :

Melody08

Answer:

9h 30min

Step-by-step explanation:

8.45pm to 9pm = 15 minutes

9pm to 6am = 9h

6am to 6.15am = 15 minutes

Total amount of time spent to sleep = 15 min + 9h + 15 min

                                                            = 9h 30min

lancemartinezz

Answer:

9 hours and 30 minutes

Step-by-step explanation: You can just count by hand. 8:45-9:45 (1 hour) 9:45-10:45 (2 hours) so on and so on.