Light emitting diode (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.41 and lasts for 1,000 hours. A 15-watt LED, which provides the same light, costs $3.20 and lasts for 12,000 hours. A kilowatt-hour is 1,000 watts for 1 hour. Suppose you have a residence with a lot of incandescent bulbs that are used on average 500 hours a year. The average bulb will be about halfway through its life, so it will have 500 hours remaining (and you can’t tell which bulbs are older or newer). If you require a return of 9 percent, at what cost per kilowatt-hour does it make sense to replace your incandescent bulbs today? Note: A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 6 decimal places, e.g., 32.161616.

Light emitting diode (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.41 and lasts for 1,000 hours. A 15-watt LED, which provides the same light, costs $3.20 and lasts for 12,000 hours. A kilowatt-hour is 1,000 watts for 1 hour. Suppose you have a residence with a lot of incandescent bulbs that are used on average 500 hours a year. The average bulb will be about halfway through its life, so it will have 500 hours remaining (and you can’t tell which bulbs are older or newer). If you require a return of 9 percent, at what cost per kilowatt-hour does it make sense to replace your incandescent bulbs today? Note: A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 6 decimal places, e.g., 32.161616.

Microeconomic Theory

12th Edition

ISBN:9781337517942

Author:NICHOLSON

Publisher:NICHOLSON

Chapter17: Capital And Time

Section: Chapter Questions

Problem 17.6P

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Light emitting diode (LED) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 60-watt incandescent light bulb costs $.50 and lasts for 1,000 hours. A 15-watt LED, which provides the same light, costs $3.65 and lasts for 12,000 hours. A kilowatt-hour is 1,000 watts for 1 hour. Suppose you have a residence with a lot of incandescent bulbs that are used on average 500 hours a year. The average bulb will be about halfway through its life, so it will have 500 hours remaining (and you can't tell which bulbs are older or newer). If you require a return of 9 percent, at what cost per kilowatt-hour does it make sense to replace your incandescent bulbs today? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 6 decimal places, e.g., 32.161616.) Break-even cost
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It’s time to get a new laptop that is $2500. If you save up for it each month it will take one year in an account that earns 5% annual interest. (A)How much would you have to put aside each month to have enough for it? (B)What are the total acquisition costs of saving up for the laptop? answer it using the annualize percentage change formula
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You are considering adding a new software title to those published by your highly successful software company. If you add the new product, it will use capacity on your disk duplicating machines that you had planned on using for your flagship product, "Battlin' Bobby." You had planned on using the unused capacity to start selling "BB" on the West coast in two years. You would eventually have had to purchase additional duplicating machines 10 years from today, but using the capacity for your new product will require moving this purchase up to 2 years from today. If the new machines will cost $115,000 and can be expensed under Section 179, your marginal tax rate is 21 percent, and your cost of capital is 16 percent, what is the opportunity cost associated with using the unused capacity for the new product? (Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 2 decimal places.) Opportunity cost
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Just question 2.9
[Use Excel] You are planning to buy a new car before you move to a new place for a job after graduation. You are given two options. The first one is the Toyota Prius which has an initial cost of $25,000 with miles per gallon (MPG) of 50. The second option is a regular sedan car with an initial cost of $18,000 and an MPG of 25. If the gasoline price is $ 4.50/gallon, the annual effective interest rate is 8%, beyond which annual mileage of the car you will choose Prius over the regular car. The car is supposed to stay for 10 years. [Round the final answer to an integer by round(answer,0) command]