EBK BASICS OF ENGINEERING ECONOMY
EBK BASICS OF ENGINEERING ECONOMY
2nd Edition
ISBN: 8220102797123
Author: Blank
Publisher: YUZU
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Chapter 3, Problem 46P
To determine

Calculate the present worth.

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Centrum Water & Gas provides standby power to pumping stations using diesel-powered generators. An alternative is the use of natural gas to power the generators, but it will be a few years before the gas is available at remote sites. Centrum estimates that by switching to gas, it will save $15,000 per year, starting 3 years from now through the end of year 20. At an interest rate of 8% per year, determine the present worth of the projected savings.
Costs associated with the manufacture of miniature high-sensitivity piezoresistive pressure transducers is, $73,000 per year. A clever industrial engineer found that by spending $16,000 now to reconfigure the production line and reprogram two of the robotic arms, the cost will go down to $58,000 next year and $52,000 in years 2 through 5. Using an interest rate of 10% per year, determine the present worth of the savings due to the reconfiguration. (Hint: Include the reconfiguration cost.)
The TerraMax truck currently being manufactured and field tested by Oshkosh Truck Co. is a driverless truck intended for military use. Such a truck would free personnel for non-driving tasks such as reading maps, scanning for roadside bombs, or scouting for the enemy. If such trucks would result in reduced injuries to military personnel amounting to $15 million three years from now, determine the present worth of these benefits at an interest rate of 10% per year compounded semiannually.

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EBK BASICS OF ENGINEERING ECONOMY

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