Respuesta :

rosygupt26

Answer:

9 hours

Step-by-step explanation:

From 11:00 a.m. to 12:00 p.m. the elapsed time is 1 hour. From 12:00 p.m. to 8:00 p.m. the elapsed time is 8 hours. Add 8 + 1 to get 9 hours.

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