6 A machine used for cutting materials in a factory has the following outputs per hour atvarious speeds and requires periodic tool regrinding at the intervals cited.SpeedOutput per HourTool Regrinding200 pieces250 pieces280 piecesevery 8 hoursevery 7 hoursevery 5 hoursABA set of tools costs Php 1,800 and can be ground twenty times. Each regrinding costs Php18.00 and the time needed to regrind and change tools is 1 hour. The machine operator ispaid Php 28.00 per hour, including the time the tool is changed. The tool grinder who alsosets the tools to the machine is paid Php 25.00 per hour. The hourly rate chargeable againstthe machine is Php 54.00 regardless of machine speed. Which speed is the most economical?

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Answered: A set of tools costs Php 1,800 and can…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter12: Queueing Models

Section12.5: Analytic Steady-state Queueing Models

Problem 37P

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