Question: Problem: Consider a two-server system in which a customer is served first by server 1, then by server 2, and then departs. The service time

Problem: Consider a two-server system in which a customer is served first by server 1, then by server 2, and then departs. The service time at server 1 is exponential with mean of 15 minutes and that at server 2 is exponential with mean 40 minutes. When you arrive, you find server 1 free and two customers at server 2 - customer A in service and customer B waiting in line. What is the probability that B is still in the system when you move over to server 2?

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