Engineering Economy (17th Edition)
Engineering Economy (17th Edition)
17th Edition
ISBN: 9780134870069
Author: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher: PEARSON
Textbook Question
Chapter 1, Problem 3P

A typical discounted price of a AAA battery is $0.75. It is designed to provide 1.5 volts and 1.0 amps for about an hour. Now we multiply volts and amps to obtain power of 1.5 watts from the battery. Thus, it costs $0.75 for 1.5 Watt-hours of energy. How much would it cost to deliver one kilowatt-hour? (Think of a kilowatt-hour of electricity as the power needed to run your dishwasher one time.) How does this compare with the cost of energy from your local electric utility at $0.10 per kilowatt-hour? (1.2 1.3)

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Assume you are appointed head of the U.S. Department of Homeland Security in charge of preventing illegal crossings along a section of the U.S.-Mexico border. You have a weekly budget of $16,000. As a department head, you get satisfaction (or "utility") from preventing illegal border crossings and you have at your disposal two methods for preventing illegal crossings: 1) Hiring border security personnel to patrol strategic points along the border at a cost of $1000 per week per person or, 2) Purchase surveillance drones to patrol the border at a weekly cost of $3000 per drone. Based on the data attached in the picture below, explain whether you agree or disagree with the following statement made by a subordinate: "Based on the data, the department's "utility" is highest if we employ 16 security personnel because drones are just too expensive."
In your country, the demand curve of a litre of petrol is given by: P = 107 - 5QD. Due to political unrest coupled with the slow recovery from pandemic, the global price of petrol surged which led to an increase of price per litre of petrol in your country from TK55 to TK80. After the price rise, the employees of the company you work for demanded a pay-raise. Your employer, hence, increased your income from 31033 taka to 46187 taka. The new demand curve at the new income level is P = 132 - 5QD. A). Calculate the income elasticity of demand (YED). B) Now assume that the increase in income (and the subsequent shift of the demand curve) had occured before the rise in price, then what would the YED be?
1.The price p in dollars of a certain commodity and the quantity x sold obey the demand equation p= -1/5 + 200 where 0<=x <=1000. Suppose that the cost C in dollars of producing x units is C= the square root of x divided by 10 + 400. Assuming that all items produced are sold, find the cost of c as a function of the price p. 2. The value V of a vehicle is v(t)= 420,000(0.965)^t. What would be the car's worth in 2 years? In how many years would the car be worth $325,000?

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