The mail order firm of L. L. Pea receives an average of200 calls per hour (times between calls are exponentiallydistributed). It takes an L. L. Pea operator an average of 3minutes to handle a call. If a caller gets a busy signal, L. L.Pea assumes that he or she will call Seas Beginning (acompeting mail order house), and L. L. Pea will lose anaverage of $30 in profit. The cost of keeping a phone lineopen is $9 per hour. How many operators should L. L. Peahave on duty?
The mail order firm of L. L. Pea receives an average of200 calls per hour (times between calls are exponentiallydistributed). It takes an L. L. Pea operator an average of 3minutes to handle a call. If a caller gets a busy signal, L. L.Pea assumes that he or she will call Seas Beginning (acompeting mail order house), and L. L. Pea will lose anaverage of $30 in profit. The cost of keeping a phone lineopen is $9 per hour. How many operators should L. L. Peahave on duty?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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The mail order firm of L. L. Pea receives an average of
200 calls per hour (times between calls are exponentially
distributed). It takes an L. L. Pea operator an average of 3
minutes to handle a call. If a caller gets a busy signal, L. L.
Pea assumes that he or she will call Seas Beginning (a
competing mail order house), and L. L. Pea will lose an
average of $30 in profit. The cost of keeping a phone line
open is $9 per hour. How many operators should L. L. Pea
have on duty?
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