Respuesta :
Answer:
The answer is ten and a half hour.
Step-by-step explanation:
Because if you add eight and a half and two and a half, youll get ten and a half hour.
You take the 2.5 hours from the start the. You add your 8.5 hours when you add 2+8= 10 and .5+.5 and get 1 10+1= 11
2.5+8.5= 11
2.5+8.5= 11