Given a distributed system where all clients clocks should be synchronized with the server. Client X sends a request to the server at 18:15:32, and receives the reply at 18:16:02 with the server time (18:15:22). Using Cristian's algorithm answer the following question:

a) Calculate the time on the client side.

b) Assuming that 12 requests are initialized from client machine to the server to calculate the average communication cost, the time in seconds for these requests are (6,5,6,5,3,4,8,5,4,4,3,7). Calculate the time on the client side using the average communication cost.