Contemporary Engineering Economics (6th Edition)
Contemporary Engineering Economics (6th Edition)
6th Edition
ISBN: 9780134105598
Author: Chan S. Park
Publisher: PEARSON
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Chapter 16, Problem 4P
To determine

Benefit and cost.

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It is well established that indoor air quality (IAQ) has a significant effect on general health and productivity of employees at a workplace. A study showed that enhancing IAQ by increasing the building ventilation from 5 cfm (cubic feet per minute) to 20 cfm increased the productivity by 0.25 percent, valued at $90 per person per year, and decreased the respiratory illnesses by 10 percent for an average annual savings of $39 per person while increasing the annual energy consumption by $6 and the equipment cost by about $4 per person per year (ASHRAE Journal, December 1998). For a workplace with 120 employees, determine the net monetary benefit of installing an enhanced IAQ system to the employer per year.
3.  You have developed a self-study certification system for those who need credit hours for recertification by your state’s social welfare office. The system operates at virtually no cost, i.e., there is no marginal cost. A marketing research team has assembled the following sales information. You are researching the options for pricing the courses. Your goal is to achieve maximum revenue to establish funding to maintain and update the system to reflect annual policy changes in licensing requirements. Complete the calculations for Total Revenue by determining how many customers will purchase at each of the segment prices.  Online Self Certifications for Social Work License     Certification in Online Counseling   Certification as a Group Home Counselor   Bundle     Customers   TR Counseling   TR Group Home   TR Bundle Segment 1 1000 $190 a $70 e $260 4a                 Segment 2 1000 $150 b $90 f $240 4b…
Qantas expects to cut its fuel bill by as much as $40 million a year thanks to a radical overhaul to how it plots its flights across the globe. The airline has spent five years and millions of dollars building a new flight planning program – which it says will materially cut its fuel bill and bring its ultra-haul ambitions closer to reality. Qantas’ team of dispatchers have used the same computer program for 30 years to plan the route of each flight, assessing weather, airspace traffic, safety and legal constraints on three of four possible routes. The new system uses cloud computing to crunch data on thousands of possible flight paths, using millions of data points – including the latest wind patterns, and varying altitudes and wind speeds – to build a cost map that presents the most efficient route… A flight to Johannesburg, for example, was directed to fly 160 nautical miles further than it would normally, but in doing so cut the headwinds it experienced by two-thirds. The 747…
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