4.In the process below, as shown, 240 patients visit a clinic each day. After registration at step 1, usually each patient has to wait for 5 mins in average, before theyll get assessed for the right next step based on their documentation in hand. Once step 2 is complete, usually 40% of the patients go to step 3, which takes 15 minutes in average, and the rest are directed to step 4. 4-1) What is the hourly rate of patients arrival in this clinic