A firm cleans chemical tank cars in the Bay St. Louis area. With standard equipment, the firm typically cleaned 85 chemical tank cars per month. They utilized 15 gallons of solvent, and two employees worked 20 days per month, 8 hours a day. The company decided to switch to a larger cleaning machine. Last April, they cleaned 55 tank cars, and only worked 15 days of the month. They utilized 13 gallons of solvent, and the two employees worked 6 hours a day. *type in only the values & indicate negative values by a "-" sign *round all values to 3 decimals, unless indicated otherwise (a) The total number of hours worked during the month with the standard equipment is round this value to a whole number (b) The total number of hours worked during the month with the large equipment is this value to a whole number (c) With the standard equipment, the raw material productivity is of solvent, and their labor productivity is (d) With the larger machine, the raw material productivity is solvent, and their labor productivity is (e) The percentage change in material productivity is %. labor productivity is chemical tanks per gallon chemical tanks per labor hour. round chemical tanks per gallon of chemical tanks per labor hour. %, while the percentage change in

A firm cleans chemical tank cars in the Bay St. Louis area. With standard equipment, the firm typically cleaned 85 chemical tank cars per month. They utilized 15 gallons of solvent, and two employees worked 20 days per month, 8 hours a day. The company decided to switch to a larger cleaning machine. Last April, they cleaned 55 tank cars, and only worked 15 days of the month. They utilized 13 gallons of solvent, and the two employees worked 6 hours a day. type in only the values & indicate negative values by a "-" sign round all values to 3 decimals, unless indicated otherwise (a) The total number of hours worked during the month with the standard equipment is round this value to a whole number (b) The total number of hours worked during the month with the large equipment is this value to a whole number (c) With the standard equipment, the raw material productivity is of solvent, and their labor productivity is (d) With the larger machine, the raw material productivity is solvent, and their labor productivity is (e) The percentage change in material productivity is %. labor productivity is chemical tanks per gallon chemical tanks per labor hour. round chemical tanks per gallon of chemical tanks per labor hour. %, while the percentage change in

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter5: Network Models

Section: Chapter Questions

Problem 1C

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The Decision Sciences Department is trying todetermine whether to rent a slow or a fast copier. Thedepartment believes that an employee’s time is worth$15 per hour. The slow copier rents for $4 per hour,and it takes an employee an average of 10 minutes tocomplete copying. The fast copier rents for $15 per hour,and it takes an employee an average of six minutes tocomplete copying. On average, four employees per hourneed to use the copying machine. (Assume the copyingtimes and interarrival times to the copying machineare exponentially distributed.) Which machine shouldthe department rent to minimize expected total cost perhour?
I need help with this practice problem A firm cleans chemical tank cars in the Bay St. Louis area. With standard equipment, the firm typically cleaned 85 chemical tank cars per month. They utilized 15 gallons of solvent, and two employees worked 20 days per month, 8 hours a day. The company decided to switch to a larger cleaning machine. Last April, they cleaned 55 tank cars, and only worked 15 days of the month. They utilized 13 gallons of solvent, and the two employees worked 6 hours a day. *type in only the values & indicate negative values by a "-" sign *round all values to 3 decimals, unless indicated otherwise (d) With the larger machine, the raw material productivity is _______ chemical tanks per gallon of solvent, and their labor productivity is ______ chemical tanks per labor hour. (e) The percentage change in material productivity is _____ %, while the percentage change in labor productivity is ________ %.
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The Decision Sciences Department is trying todetermine whether to rent a slow or a fast copier. Thedepartment believes that an employee’s time is worth $15per hour. The slow copier rents for $4 per hour and it takesan employee an average of 10 minutes to complete copying(exponentially distributed). The fast copier rents for $15 perhour and it takes an employee an average of 6 minutes tocomplete copying. An average of 4 employees per hour needto use the copying machine (interarrival times areexponential). Which machine should the department rent?
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