Hospital X has a new, state - of - the - art MRI machine. Patients arrive for MRI scans at an average rate of 2.5 per hour. Each scan takes an average of 32 minutes. On average, patients at hospital X spend a total of 110 minutes for their MRI procedure. This includes the wait time before the scan and the scan duration itself. On average, how many patients are waiting for an MRI scan at hospital X