OIT department would like to lease a printer server that will allow students to print from their own devices wirelessly. There are two alternatives available,

server (A) which is more expensive to lease ($500 per day) but also faster (30 jobs per day), while server (B) is cheaper ($350 per day) but slower (25 jobs

per day)

The system can be modeled as an M/M/1 queue system, FIFO with 20 jobs per day. The cost of holding a job waiting is $50 per job and per day

Which server should the university choose in order to minimize the expected costs?