Delivering Business Service Operations

ChocoKart is an AI-driven chocolate recommendation platform where you get recommendations on chocolates based on your taste buds and lifestyle. You recently took the role as the lead of the cloud server management team. You need to manage the number of servers to take up the customers application workload. There are currently three available servers, whose usage depends on the number of customers using the app.

Server usage protocol:

If there are less than1000 customers on the app at any point in time then one ChocoKart's server is used,

if there are 1000 to 10,000 customers on the app at any point in time then two servers are used,

else three servers are activated to take up the workload.

QUESTION:

If the chance (probability) to find less than 1000 customers on the app, 1000-10,000 customers on the app, and more than 10,000 customers on the app at any point in time are 0.25, 0.60, and 0.15 respectively, then what is the utilization of the servers?

(Hint: First determine, how many servers are required on average?)