On an average 100 customers arrive at a place each hour, and on the av – McqOptions

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1.	On an average 100 customers arrive at a place each hour, and on the average the server can process 120 customers per hour. What is the proportion of time the server is idle?.
A.	1 -
B.	1 +
C.
D.	None of these
Answer» B. 1 +

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