Seve Students are going through a three step process to obtain their cos. Each student will spend 2 minutes at the registration desk before going to one of three cashiers to pay fee for the ID card Ater that, heshe wil visit one of four processing stations to have isher picture taken and ID card printed Visits to the cashier and to processing station take 10 and 20 minutes respectively if the demand rate is 05 student per minute how long does it take to process 20 students, assuming the system is fully Moe Choice 160 m 0 100 m 55 27