question 14 for customer 10, the service start time and finish time are, respectively, 100 and 125 100 and 145 120 and 140 120 and 145 none of the above 1 points save answer question 15 for customer 15, the time between arrivals and the time of arrival are, respectively, 10 and 160 100 and 160 10 and 125 10 and 150 none of the above 1 points save answer question 16 for customer 15, the service type and time needed are, respectively, o and 20 o and 25 t and 20 t and 25 none of the above 1 points save answer question 17 for customer 15, the service start time and finish time are, respectively, 180 and 195 175 and 190 175 and 185 165 and 180 none of the above 1 points save answer question 18 on the average, a customer must wait for 10 minutes 5 minutes 9/5 minutes 10/3 minutes none of the above