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For a construction job, a contactor can haul rock by means of an ordinary 10-cu ruck, or he can use a combination rig where a 10-cubic-yard truck also pulls a railer. When this combination is used, the trails slide into the empty dump tru eturn trip. The total equipment operating cost, including the driver, amortiza nterest on the investment fuel, and maintenance is Php 12.25 for the dump 17-75 per hour for the tandem rig. For the required 10-mile haul, the load hauling and return ties are as follows: Loading Unloading Time (minutes) Conventional 3 4 Double Rig 5 10

For a construction job, a contactor can haul rock by means of an ordinary 10-cu ruck, or he can use a combination rig where a 10-cubic-yard truck also pulls a railer. When this combination is used, the trails slide into the empty dump tru eturn trip. The total equipment operating cost, including the driver, amortiza nterest on the investment fuel, and maintenance is Php 12.25 for the dump 17-75 per hour for the tandem rig. For the required 10-mile haul, the load hauling and return ties are as follows: Loading Unloading Time (minutes) Conventional 3 4 Double Rig 5 10

Practical Management Science
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter11: Simulation Models
Section: Chapter Questions
Problem 47P
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For a construction job, a contactor can haul rock by means of an ordinary 10-cubic-yard dump truck, or he can use a combination rig where a 10-cubic-yard truck also pulls an 8-cubic-yard trailer. When this combination is used, the trails slide into the empty dump truck body for the return trip. The total equipment operating cost, including the driver, amortization of capital, interest on the investment fuel, and maintenance is Php 12.25 for the dump truck and Php 17.75 per hour for the tandem rig. For the required 10-mile haul, the loading, unloading hauling and return ties are as follows: Time (minutes) Double Rig Conventional Loading Unloading Hauling Return 4 10 24 28 20 24 51 67 Which type of equipment will be more economical and how much would be the difference in its overall cost?
Transcribed Image Text:For a construction job, a contactor can haul rock by means of an ordinary 10-cubic-yard dump truck, or he can use a combination rig where a 10-cubic-yard truck also pulls an 8-cubic-yard trailer. When this combination is used, the trails slide into the empty dump truck body for the return trip. The total equipment operating cost, including the driver, amortization of capital, interest on the investment fuel, and maintenance is Php 12.25 for the dump truck and Php 17.75 per hour for the tandem rig. For the required 10-mile haul, the loading, unloading hauling and return ties are as follows: Time (minutes) Double Rig Conventional Loading Unloading Hauling Return 4 10 24 28 20 24 51 67 Which type of equipment will be more economical and how much would be the difference in its overall cost?
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