Respuesta :
8 hours
Step-by-step explanation 17:06-13:08= 3 hours and 98 minutes which is 4 hours and 38 minutes. Then you do 11:47-8:02= which is 3 hours and 45 minutes now and 4:38+3:45 and you get 7:83 which comes out to be 8 hours and 23 minutes rounded to the nearest quarter hour = 8 hours.