Question

In: Accounting

Two possible routes for a power line are under study. In both cases, the power line...

Two possible routes for a power line are under study. In both cases, the power line will last 15 years, have no salvage value, have annual property taxes of 2% of first cost, and have a yearly power loss of $500/km.

Around the lake Under the lake
Length 16 km 6 km
First cost $8800/km $24,000 /km
Maintenance $175/km/yr $325 /km/yr

If 9% interest is used, FIND

1. EUAC (Under) (round to nearest $100)  

2.  EUAC (Around)  (round to nearest $100)  

3. Which alternative do you recommend? (Under/Around)

PLEASE USE EXCEL TO SOLVE AND PLS SHOW EXCEL FORMULAS

Solutions

Expert Solution

Workings

Formula Description Around the lake Under the lake
A Length (in Km) 16 6
B First cost ($ per Km) 8800 24000
C = A*B Total First cost (in $) 140800 144000
D Maintenance cost each year /Km 175 325
E = A*D Total Maintenance cost each year 2800 1950
F = C*2% Annual property Taxes 2816 2880
G = A*500 Annual Power Loss 8000 3000
H = E+F+G Total Cost per annum 13616 7830
I Life in years 15 15
J Salvage Value in $ 0 0
K Interest Rate 9% 9%

Answer to Question 1

Year Cost DF@9% PV
0 144000 1     144,000
1 7830 0.917431193          7,183
2 7830 0.841679993          6,590
3 7830 0.77218348          6,046
4 7830 0.708425211          5,547
5 7830 0.649931386          5,089
6 7830 0.596267327          4,669
7 7830 0.547034245          4,283
8 7830 0.50186628          3,930
9 7830 0.46042778          3,605
10 7830 0.422410807          3,307
11 7830 0.38753285          3,034
12 7830 0.355534725          2,784
13 7830 0.326178647          2,554
14 7830 0.299246465          2,343
15 7830 0.274538041          2,150
Total 9.06068843     207,115
Sum of DF yr 1 to 15 8.06068843
EUAC =207115/8.0606       25,694
25700

Answer to Question 2

Year Cost DF@9% PV
0 140800 1     140,800
1 13616 0.917431193       12,492
2 13616 0.841679993       11,460
3 13616 0.77218348       10,514
4 13616 0.708425211          9,646
5 13616 0.649931386          8,849
6 13616 0.596267327          8,119
7 13616 0.547034245          7,448
8 13616 0.50186628          6,833
9 13616 0.46042778          6,269
10 13616 0.422410807          5,752
11 13616 0.38753285          5,277
12 13616 0.355534725          4,841
13 13616 0.326178647          4,441
14 13616 0.299246465          4,075
15 13616 0.274538041          3,738
Total 9.06068843     250,554
Sum of DF yr 1 to 15 8.06068843
EUAC =250554/8.0606       31,083
31100

Answer to Question 3

Power line under the lake is recommended because of lower EUAC. The EUAC for power line construction under the lake is 25700 and the EUAC for power line construction around the lake is 31100 and hence power line under the lake will have a saving of $5400 per annum.


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