Your boss has asked you to evaluate the economics of replacing 1,000 60-Watt incandescent light bulbs (ILBS) with 1,000 compact fluorescent lamps (CFLs) for a particular lighting application. During your investigation you discover that 13-Watt CFLS costing $2.00 each will provide the same illumination as standard 60-Watt ILBS costing $0.50 each. Interestingly, CFLs last, on average, eight times as long as incandescent bulbs. The average life of an ILB is one year over the anticipated usage of 1,000 hours each year. Each incandescent bulb costs $2.00 to install/replace. Installation of a single CFL costs $3.00, and it will also be used 1,000 hours per year. Electricity costs $0.12 per kilowatt hour (kWh), and you decide to compare the two lighting options over an 8-year study period. If the MARR is 12% per year, compare the economics of the two alternatives and write a brief report of your findings for the boss. Assume that both installation cost and cost of the bulbs occur at the beginning of each year and that the electricity expense is incurred at the end of each year for eight years. Click the icon to view the interest and annuity table for discrete compounding when /= 12% per year. More Info The PW of installing ILBS is $. (Round to the nearest dollar.) The PW of installing CFLs is $ (Round to the nearest dollar.) What type of bulbs should your boss choose? Choose the correct answer below. CFLS O ILBS Discrete Compounding; /= 12% Single Payment Compound Uniform Series Compound Amount Factor Present Worth Factor To Find F Given P Given F To Find P Amount Factor To Find F Given A Present Worth Factor To Find P To Find A To Find A Given P Sinking Fund Factor Capital Recovery Factor Given A Given F N F/P P/F FIA P/A A/F A/P 1 1.1200 0.8929 1.0000 0.8929 1.0000 1.1200 2 1.2544 0.7972 2.1200 1.6901 0.4717 0.5917 3 1.4049 0.7118 3.3744 2.4018 0.2963 0.4163 4 1.5735 0.6355 4.7793 3.0373 0.2092 0.3292 5 1.7623 0.5674 6.3528 3.6048 0.1574 0.2774 6 1.9738 0.5066 8.1152 4.1114 0.1232 0.2432 7 2.2107 0.4523 10.0890 4.5638 0.0991 0.2191 8 2.4760 0.4039 12.2997 4.9676 0.0813 0.2013 9 2.7731 0.3606 14.7757 5.3282 0.0677 0.1877 10 3.1058 0.3220 17.5487 5.6502 0.0570 0.1770 11 3.4785 0.2875 20.6546 5.9377 0.0484 0.1684 12 3.8960 0.2567 24.1331 6.1944 0.0414 0.1614 13 4.3635 0.2292 28.0291 6.4235 0.0357 0.1557 14 4.8871 0.2046 32.3926 6.6282 0.0309 0.1509 15 5.4736 0.1827 37.2797 6.8109 0.0268 0.1468

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Your boss has asked you to evaluate the economics of replacing 1,000 60-Watt incandescent light bulbs (ILBS) with 1,000 compact fluorescent lamps (CFLs) for a particular lighting application. During your investigation you discover that 13-Watt CFLS
costing $2.00 each will provide the same illumination as standard 60-Watt ILBS costing $0.50 each. Interestingly, CFLs last, on average, eight times as long as incandescent bulbs. The average life of an ILB is one year over the anticipated usage of 1,000
hours each year. Each incandescent bulb costs $2.00 to install/replace. Installation of a single CFL costs $3.00, and it will also be used 1,000 hours per year. Electricity costs $0.12 per kilowatt hour (kWh), and you decide to compare the two lighting options
over an 8-year study period. If the MARR is 12% per year, compare the economics of the two alternatives and write a brief report of your findings for the boss. Assume that both installation cost and cost of the bulbs occur at the beginning of each year and
that the electricity expense is incurred at the end of each year for eight years.
Click the icon to view the interest and annuity table for discrete compounding when /= 12% per year.
More Info
The PW of installing ILBS is $. (Round to the nearest dollar.)
The PW of installing CFLs is $
(Round to the nearest dollar.)
What type of bulbs should your boss choose? Choose the correct answer below.
CFLS
O ILBS
Discrete Compounding; /= 12%
Single Payment
Compound
Uniform Series
Compound
Amount
Factor
Present
Worth Factor
To Find F
Given P
Given F
To Find P
Amount
Factor
To Find F
Given A
Present
Worth Factor
To Find P
To Find A
To Find A
Given P
Sinking
Fund
Factor
Capital
Recovery
Factor
Given A
Given F
N
F/P
P/F
FIA
P/A
A/F
A/P
1
1.1200
0.8929
1.0000
0.8929
1.0000
1.1200
2
1.2544
0.7972
2.1200
1.6901
0.4717
0.5917
3
1.4049
0.7118
3.3744
2.4018
0.2963
0.4163
4
1.5735
0.6355
4.7793
3.0373
0.2092
0.3292
5
1.7623
0.5674
6.3528
3.6048
0.1574
0.2774
6
1.9738
0.5066
8.1152
4.1114
0.1232
0.2432
7
2.2107
0.4523
10.0890
4.5638
0.0991
0.2191
8
2.4760
0.4039
12.2997
4.9676
0.0813
0.2013
9
2.7731
0.3606
14.7757
5.3282
0.0677
0.1877
10
3.1058
0.3220
17.5487
5.6502
0.0570
0.1770
11
3.4785
0.2875
20.6546
5.9377
0.0484
0.1684
12
3.8960
0.2567
24.1331
6.1944
0.0414
0.1614
13
4.3635
0.2292
28.0291
6.4235
0.0357
0.1557
14
4.8871
0.2046
32.3926
6.6282
0.0309
0.1509
15
5.4736
0.1827
37.2797
6.8109
0.0268
0.1468
Transcribed Image Text:Your boss has asked you to evaluate the economics of replacing 1,000 60-Watt incandescent light bulbs (ILBS) with 1,000 compact fluorescent lamps (CFLs) for a particular lighting application. During your investigation you discover that 13-Watt CFLS costing $2.00 each will provide the same illumination as standard 60-Watt ILBS costing $0.50 each. Interestingly, CFLs last, on average, eight times as long as incandescent bulbs. The average life of an ILB is one year over the anticipated usage of 1,000 hours each year. Each incandescent bulb costs $2.00 to install/replace. Installation of a single CFL costs $3.00, and it will also be used 1,000 hours per year. Electricity costs $0.12 per kilowatt hour (kWh), and you decide to compare the two lighting options over an 8-year study period. If the MARR is 12% per year, compare the economics of the two alternatives and write a brief report of your findings for the boss. Assume that both installation cost and cost of the bulbs occur at the beginning of each year and that the electricity expense is incurred at the end of each year for eight years. Click the icon to view the interest and annuity table for discrete compounding when /= 12% per year. More Info The PW of installing ILBS is $. (Round to the nearest dollar.) The PW of installing CFLs is $ (Round to the nearest dollar.) What type of bulbs should your boss choose? Choose the correct answer below. CFLS O ILBS Discrete Compounding; /= 12% Single Payment Compound Uniform Series Compound Amount Factor Present Worth Factor To Find F Given P Given F To Find P Amount Factor To Find F Given A Present Worth Factor To Find P To Find A To Find A Given P Sinking Fund Factor Capital Recovery Factor Given A Given F N F/P P/F FIA P/A A/F A/P 1 1.1200 0.8929 1.0000 0.8929 1.0000 1.1200 2 1.2544 0.7972 2.1200 1.6901 0.4717 0.5917 3 1.4049 0.7118 3.3744 2.4018 0.2963 0.4163 4 1.5735 0.6355 4.7793 3.0373 0.2092 0.3292 5 1.7623 0.5674 6.3528 3.6048 0.1574 0.2774 6 1.9738 0.5066 8.1152 4.1114 0.1232 0.2432 7 2.2107 0.4523 10.0890 4.5638 0.0991 0.2191 8 2.4760 0.4039 12.2997 4.9676 0.0813 0.2013 9 2.7731 0.3606 14.7757 5.3282 0.0677 0.1877 10 3.1058 0.3220 17.5487 5.6502 0.0570 0.1770 11 3.4785 0.2875 20.6546 5.9377 0.0484 0.1684 12 3.8960 0.2567 24.1331 6.1944 0.0414 0.1614 13 4.3635 0.2292 28.0291 6.4235 0.0357 0.1557 14 4.8871 0.2046 32.3926 6.6282 0.0309 0.1509 15 5.4736 0.1827 37.2797 6.8109 0.0268 0.1468
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