I don't know how to start. Please help...

A storage system has 2 types of customers. The "script" customers represent a set of scripts that compute usage statistics and reports for the storage administrator. The storage customers retrieve or store files. The system has 2 resources namely, a CPU and a disk. The following measurements were collected from the system: Time in seconds CPU was busy servicing script customers = 600 Time in seconds disk was busy servicing script customers = 54 Total number of script customer completions = 600 Number of concurrent script customers = 10 Think time of script customers = 0 Time in seconds CPU was busy servicing storage customers = 47.6 Time in seconds disk was busy servicing storage customers = 428.4 Total number of storage customer completions = 476 Number of concurrent storage customers = 25 Think time of storage customers = 30 a. b. Based on the measurement data, calculate the resource demands of both classes. Initially, the storage administrator wants to explore a single class model. i) Based on the collected measurements, calculate the resource demands of an equivalent single class that represents one user class that is a composite of both the "script and storage" customers. (Hint: Proceed from first principles based on the definition of demand instead of directly using the demands calculated in a) ii) Based on the collected measurements, calculate an equivalent think time for the single class system that is a composite of both the "script" and "storage" customers. (Hint: Your calculation should reflect the fact that the two classes visit their terminals at a different rate)