Ekotek_Alfiano Fuadi5

7/17/2019 Ekotek_Alfiano Fuadi5

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5.1 What is the diference between mutually exclusive alternatives and i

5.3 (a) ow many alternatives are possible !rom !our independent projec

(b) 'ist all o! the possibilities.(a) lternatives 1* +,

(b) 'ist all o! the possibilities. &

$%

W$&

5.5 What is meant by the term e-ual service?

-ual service means that alternatives must provide service !or the s

5./

0nhouse 2ontract

irst 2ost 34 4

2ost 5

0ncome 16 3.1

7alva8e

'i!e 5 5

i 149 149

5.:

$ %

2 ; (15#444.44) ; (35#444.44)

<2 ; (:#444.44) ; (/#444.44)

7 ; #444.44 ; 4#444.44

'i!e 5 5

i 19 19

<utually exclusive alternatives accomplish the same thin8. =here!oreach other. 0ndependent projects accomplish diferent thin8s. =here!selected as they are only compared a8ainst the donothin8 alternati

company that manu!actures ma8netic membrane switches is invescash >ows shown (;1 million units). Which one should be selected on

metallur8ical en8ineer is considerin8 two materials !or use in a spaselected on the basis o! a present worth comparison at an interest ranot selected above will it become the more economic alternative?



5.11

2 ; (#5#444.44) ; (3#*1#14.44)

2 ; (1*#444.44) 7alva8e ; 544#444.44

i *9 *9

n 54 54

5.13

54mm line 344mm line

2 ; (155#444.44) ; (14#444.44)

2 ; (3#444.44)

i 149 149

n 34 34

5.15

=he <urphy 2ounty ire +epartment is considerin8 two options !or uremodelin8 the "re stations on lameda venue and =rowbrid8e oulindustry standard is about 54 years o! use !or a station.) =he cost !or

while the cost o! redoin8 the =rowbrid8e station is ;1.3 million. @lantwo stations# buildin8 a new "re station# and sellin8 the land and struestimated to be ;3**#444 per acre. =he siAe o! the new "re station w;151.1B per s-uare !oot. 2ontractor !ees !or overhead# pro"t# etc. ar;B1#544. (ssume all o! the costs !or plan occur at time 4.) 0! planwill be ;1*#444 per year. Cnder plan # the sale o! the old sites is a!uture. Cse an interest rate o! *9 per year and a 54year use!ul li!e !plan is better on the basis o! a present worth analysis.

public water utility is tryin8 to decide between two diferent siAesinitial cost o! ;155#444# whereas a 344mm line will cost ;14#444. 7pumpin8 cost is expected to be ;3444 more per year than !or the 5which siAe should be selected on the basis o! a present worth analysi

nion# an environmental en8ineerin8 consultin8 "rm# is tryin8 to beuse. 0t is considerin8 a 8asolineelectric hybrid and a 8asoline!ree allHolt# which will cost ;35#444 and have a ran8e o! 64 miles on the ele8asoline en8ine EicEs in. ,issanGs 'ea!# on the other hand# is a pure eits lithiumion battery will have to be rechar8ed. =he 'ea!Gs relativelyran8e anxiety. =his !act alone has caused the company to lean towarvalue o! ;15#444 in 5 years. =he 'ea! could be leased !or ;36: per m;1544 down payment !or Iaccount activation.J 0! the consultin8 comdecision# which automobile is the better option on the basis o! a presssume the operatin8 cost will be the same !or both vehicles.



Holt 'ea!

2 ; (35#444.44) ; (15#444.44)

2 ; (36:.44)

7alva8e ; 15#444.44

i 4./59 4./59

n *4 *4

5.1/

2

2 ; (64#444.44) ; (B4#444.44) ; (134#444.44)

2 ; (:#444.44) ; (*#444.44) ; (6#444.44)7alva8e ; 1#444.44

i 149 149 149

n 6 B

%ear 2

4 ; (64#444.44) ; (B4#444.44) ; (134#444.44)

1 (;B#1B1.B) (;5#656.55) (;3#*3*.3*)

(;/#63B.4) (;6#:5B.*B) (;3#345./:)

3 (;3:#B1:.*B) (;6#54/.B:) (;3#445.*)

6 (;*#16/.1) (;6#4:B.4B) (;#/3.45)

5 (;3#:4B.B3) (;5B#3**.*4) (;#6B3.*:)

* (;5#4B4./) (;3#3B*.B6) (;#5/.:4)

/ (;/#1:/.3B) (;3#4/B.:5) (;#45.*3)

B (;6#1:B.5/) (;#/::.46) (;1#B**.43)

@W ; (1/4#:/1.*B) ; (1**#*54.*3) ; (165#/61.*)

5.1:

<achine $ <achine %

2 54444 634444

2 *4444 64444

7alva8e /4444 :5444

i 149 149

n 3 *

n electric switch manu!acturin8 company has to choose one o! threcost o! ;64#444# an annual operatin8 cost o! ;:444# and a service li!have an annual operatin8 cost o! ;*444 over its 6year service li!e.operatin8 cost o! ;6444 over its Byear li!e. <ethods and will have-uipment worth an estimated ;1#444. Which method should be sel149 per year.

<achines that have the !ollowin8 costs are under consideration !or aper year# determine which alternative should be selected on the basispreadsheet solutions.



5.1

@lan 1 @lan

2 ; (*#444.44) ; (B3#444.44)

2 ; (5#444.44) ; (1#644.44)

dd2 ; ; (#544.44)

i 149 149

n 3 *

5.3

ccurate air>ow measurement re-uires strai8ht unobstructed pipe !odownstream o! the measurin8 device. 0n a "eld application# physicalconsiderin8 installin8 the air>ow probes in an elbow# Enowin8 that >process control. =his is plan 1# which will be in place !or only 3 years#with the same costs as plan 1 will be available. =his plan will have aestimated at ;5444. @lan involves installation o! a recently desi8nebe installed in a drop pipe with the transmitter located in a waterpro;B3#444# but because it is accurate and more durable# it will not havestimated to be ;1644 per year plus ;544 in year 3 !or replacemensalva8e value. t an interest rate o! 149 per year# which one should

sports mort8a8e is the brainchild o! 7tadium 2apital inancin8 Froinnovative way to "nance cashstrapped sports pro8rams by allowinnumber o! years !or the ri8ht to buy 8ood seats at !ootball 8ames !orcurrent prices. 0n 2ali!ornia# the locEedin price period is 54 years. spays !or it now to 8et season ticEets !or ;:4 each !or 54 years# whilincreasin8 by ;4 per year !or 54 years. (a) Which !an made the bett!an $ be willin8 to pay up !ront !or the mort8a8e to maEe the two pla



an $ an %

@ ; (134#444.44) ;

@ ; (:4.44) ; (:4.44)

F ; (4.44)

i B9 B9n 54 54

reason to 8ive extra money to C2' at this point.)



5.5

i169 0 K L

n 3 6 1

@W n 1*.4B 31.1 5/.6*

@W * *.:6 15./B *53.:

@W 1 3:.1 *4.6B 5/.6*

(a) xclusive (b) independent

'2< 1 7elect ' @W M 4

5./

@roses = @roses W

2 ; (/54#444.44) ; (1#354#444.44)

2 ; (*4#444.44) ; (5#444.44)

7alva8e ; B4#444.44 ; 14#444.44

i 19 19

n 6

update ; (:4#444.44)

5.:

n assistant to 7tacy 8ave her the @W values !or !our alternatives thvibration control system !or ofshore plat!orm application. =he resultalternative(s) should be selected (a) i! the alternatives are exclusive#

=wo processes can be used !or producin8 a polymer that reduces !ric;/54#444# an operatin8 cost o! ;*4#444 per year# and a salva8e valucost o! ;1#354#444# an operatin8 cost o! ;5#444 per year# and a ;1re-uire updatin8 at the end o! year at a cost o! ;:4#444. Which proanalysis at an interest rate o! 19 per year?

=wo manu!acturers supply <N0 systems !or medical ima8in8. 7t. Kudewas purchased B years a8o with the newer technolo8y and clarity o!



7ystem L 7ystem '

2 ; (1#*44#444.44) ; (#144#444.44)

2 ; (/4#444.44) ; (54#444.44)7alva8e ; 644#444.44

F ; (3#444.44)

i 19 19

n 6 B

5.31

n O 22

i B9

; (144#444.44)

5.33

@ ; (344#444.44) 22

; (35#444.44)

@eriodic ; (/5#444.44)

n 5

i 19

5.35

2ompare the alternatives shown on the basis o! their capitaliAed cost

< ,

2 ; (154#444.44) ; (B44#444.44)

; (54#444.44) ; (1#444.44)

7 ; B#444.44 ; 1#444#444.44

n 5 O

i 149 149

# # # # #"rst cost o! ;#144#444# an operatin8 cost o! ;54#444 the "rst yearno salva8e value a!ter its Byear li!e. Which system should be selecto! 19 per year?

wealthy businessman wants to start a permanent !und !or supportito 8ive e-ual amounts o! money !or each o! the next 5 years# plus onbe withdrawn each year !orever# be8innin8 in year *. 0! the !und earnbe donated each time?

ind the capitaliAed cost o! a present cost o! ;344#444# annual costsCse an interest rate o! 19 per year.



5.3/

; (64#444.44) 22

i B9

; (544#444.44)

n 11

ecause you are thanE!ul !or what you learned in en8ineerin8 econoname o! the pro!essor who tau8ht the course. %ou plan to deposit moawarded be8innin8 1 years !rom now (which happens to be the exainterest that is accumulated between now and year 1 is to be addethat is earned each year will be awarded as scholarship money. 0! yoyear# how much must you donate now i! the !und earns interest at a



dependent projects?

ts identi"ed as W# $# %# and &?

W $ %

W$ W% W&

$& %& W$%

W%& $%& W$%&

me period o! time# and at the same time.

%ear 0nhouse 2ontract 0nhouse

4 ; (34.44) 4

1 ;B.1B ;1.44

;/.66 ;4.:1

3 ;*./* ;4.B3

6 ;*.15 ;4./5 4 1

5 ;5.5: ;4.*B

; 5.3* ;6.1/ 5;

@W ; 5#35B#:3.5/ ; 6#1*:#B*5.65

7elect 0nhouse production ;34

$

%ears $ %

4 ; (15#444.44) ; (35#444.44)

1 (;B#435./1) (;*#54.44)

(;/#1/6./6) (;5#5B4.3*)

3 (;*#64*.4) (;6#:B.6*) 4 1

6 (;5#/1:.**) (;6#66B.*3)

5 (;5#14*.B6) (;3#:/1.::) ;:#444

@W ; (6*#34B.13) ; (6B#BB6.:4)

(a) 7elect <aterial $ ;15#444

(b) 7elect % 0! irst cost P ; (3#63.6)

# only one is to be selected# so they are compared a8ainstre# none# one# more than one# or all o! them can bee.

ti8atin8 two production options that have the estimatedthe basis o! a present worth analysis at 149 per year?

ce vehicle. ll estimates are made. (a) Which should bete o! 19 per year? (b) t what "rst cost !or the material



4 1

@W ; (6#3/#::6.66) ; (3#5B6#:/5.B) ;1*#444

7elect @lan ;#5#444

54 mm

54mm line 344mm line 4 1

@W ; (1B3#B4./6) ; (14#444.44)

0nstall 54mm line ;3#444

;155#444

Holt

8radin8 its a8in8 physical !acilities. @lan involvesevard that are 5/ and *1 years old# respectively. (=heremodelin8 the lameda station is estimated at ;:5#444

calls !or buyin8 5 acres o! land somewhere between thectures at the previous sites. =he cost o! land in that area isould be :444 s-uare !eet with a construction cost o!expected to be ;364#444# and architect !ees will beis adopted# the extra cost !or personnel and e-uipment

ticipated to net a positive ;544#444 "ve years in ther the remodeled and new stations to determine which

! pipe !or a new water main. 54mm line will have anince there is more head loss throu8h the 54mm pipe# the4mm line. 0! the lines are expected to last !or 34 years#s usin8 an interest rate o! 149 per year?

co!riendly in ac-uirin8 an automobile !or 8eneral oDceelectric hatchbacE. =he hybrid under consideration is F<Gsctric battery and several hundred more miles when thelectric that will have a ran8e o! only 144 miles# a!ter whichlimited ran8e creates a psycholo8ical efect Enown as

d purchasin8 the Holt# which is assumed to have a salva8eonth (endo!month payments) !or 5 years a!ter an initialany plans to i8nore the ran8e anxiety efect in maEin8 its

ent worth analysis at an interest rate o! 4./59 per month?



Holt 'ea!

@W ; (5#61:.54) ; (31#B1.51) 4 1

7elect F<Qs Holt

;3#444

;35#444

4 1

7elect <ethode 2 ;:#444

;64#444

4 1

;*#444

;B4#444

$

(a) hand

@Wx 4 1

;*4#444

; (*4/#43/.44)

@Wy ;54#444

; (554#5B5.44)

7elect <achine %

diferent assembly methods. <ethod will have a "rsto! years. <ethod will cost ;B4#444 to buy and will

ethod 2 will cost ;134#444 initially with an annuale no salva8e value# but method 2 will have somelected? Cse present worth analysis at an interest rate o!

robotiAed weldin8 process. Csin8 an interest rate o! 149s o! a present worth analysis. 7how (a) hand and (b)

(54#444 *4#444(@R#149#*) 1B4#444(@R#149#3) S

/4#444(@R#149#*))

(634#444 64#444(@R#149#*) S:5#444(@R#149#*))



%

(b) spreadsheet

%ear $ %

4 ; (54#444.44) ; (634#444.44)

1 ; (*4#444.44) ; (64#444.44)

; (*4#444.44) ; (64#444.44) 4 1

3 ; (64#444.44) ; (64#444.44)6 ; (*4#444.44) ; (64#444.44) ;64#444

5 ; (*4#444.44) ; (64#444.44)

* ; 14#444.44 ; 55#444.44 ;634#444

@W T 149 ; (*4/#43:.13) ; (554#5B5.64)

7elect <achine %

@lan 1

4 1

;5#444

;*#444

%ear @lan 1 @lan @lan

4 ; (*#444.44) ; (B3#444.44)

1 ; (5#444.44) ; (1#644.44)

; (5#444.44) ; (1#644.44)

3 ; (31#444.44) ; (3#:44.44)

6 ; (5#444.44) ; (1#644.44) 4 1

5 ; (5#444.44) ; (1#644.44)

* ; (5#444.44) ; (1#644.44) ;1#644

@W T 149 ; (*/#314.6:) ; (:4#:/5.*5)

7elect @lan 1 ;B3#444

r a minimum o! 14 diameters upstream and 5 diametersconstraints compromise the pipe layout# so the en8ineer isw measurement will be less accurate but 8ood enou8h !ora!ter which a more accurate >ow measurement systemrst cost o! ;*#444 with an annual maintenance cost

d submersible air>ow probe. =he stainless steel probe can! enclosure on the handrail. =he "rst cost o! this system isto be replaced !or at least * years. 0ts maintenance cost iso! si8nal processin8 so!tware. ,either system will have a

be selected on the basis o! a present worth comparison?

p# a company head-uartered in 2hica8o# 0llinois. 0t is an!ans to si8n up to pay a Imort8a8eJ over a certainseveral decades with season ticEet prices locEed in at

sume C2' !an $ purchases a ;134#444 mort8a8e and!an % buys season ticEets at ;:4 in year 1# with prices

er deal i! the interest rate is B9 per year? (b) What shouldns exactly e-uivalent economically? (ssume he has no



%ear an $ an % an $

4 ; (134#444.44) ;

1 ; (:4.44) ; (:4.44)

; (:4.44) ; (314.44)

3 ; (:4.44) ; (334.44)6 ; (:4.44) ; (354.44) 4 1

5 ; (:4.44) ; (3/4.44)

* ; (:4.44) ; (3:4.44) ;:4

/ ; (:4.44) ; (614.44)

B ; (:4.44) ; (634.44) ;134#444

: ; (:4.44) ; (654.44)

14 ; (:4.44) ; (6/4.44)

11 ; (:4.44) ; (6:4.44)

1 ; (:4.44) ; (514.44) an %

13 ; (:4.44) ; (534.44)16 ; (:4.44) ; (554.44)

15 ; (:4.44) ; (5/4.44)

1* ; (:4.44) ; (5:4.44)

1/ ; (:4.44) ; (*14.44) 4 1

1B ; (:4.44) ; (*34.44) ;:4

1: ; (:4.44) ; (*54.44)

4 ; (:4.44) ; (*/4.44)

1 ; (:4.44) ; (*:4.44)

; (:4.44) ; (/14.44)

3 ; (:4.44) ; (/34.44)

6 ; (:4.44) ; (/54.44)

5 ; (:4.44) ; (//4.44)

* ; (:4.44) ; (/:4.44)

/ ; (:4.44) ; (B14.44)

B ; (:4.44) ; (B34.44)

: ; (:4.44) ; (B54.44)

34 ; (:4.44) ; (B/4.44)

31 ; (:4.44) ; (B:4.44)

3 ; (:4.44) ; (:14.44)

33 ; (:4.44) ; (:34.44)

36 ; (:4.44) ; (:54.44)

35 ; (:4.44) ; (:/4.44)

3* ; (:4.44) ; (::4.44)

3/ ; (:4.44) ; (1#414.44)

3B ; (:4.44) ; (1#434.44)

3: ; (:4.44) ; (1#454.44)

64 ; (:4.44) ; (1#4/4.44)

61 ; (:4.44) ; (1#4:4.44)



6 ; (:4.44) ; (1#114.44)

63 ; (:4.44) ; (1#134.44)

66 ; (:4.44) ; (1#154.44)

65 ; (:4.44) ; (1#1/4.44)

6* ; (:4.44) ; (1#1:4.44)

6/ ; (:4.44) ; (1#14.44)

6B ; (:4.44) ; (1#34.44)6: ; (:4.44) ; (1#54.44)

54 ; (:4.44) ; (1#/4.44)

@W T B9 ; (133#56/./1) ; (*#33:.5/)

an % made the better deal

'

*

164.6*

164.6*

46.6*

7elect 0# K# '

@roses =

%ear @roses = @roses W

4 ; (/54#444.44) ; (1#354#444.44)

1 ; (*4#444.44) ; (5#444.44) 4 1

; (/34#444.44) ; (115#444.44)

3 ; (*4#444.44) ; (5#444.44) ;*4#444

6 ; 4#444.44 ; :5#444.44

@W T 19 ; (1#615#51:.61) ; (1#61#61:.41) ;/54#444

W T 19 ; (#/#36/.4) ; (#3*#*34.36)

7elect @rocess =

L

y are comparin8 !or the development o! a remote controlin the table use a <NN o! 169 per year. +etermine whichand (b) i! the projects are independent.

ion loss in en8ines. @rocess = will have a "rst cost o!o! ;B4#444 a!ter its year li!e. @rocess W will have a "rst

4#444 salva8e value a!ter its 6year li!e. @rocess W will alsocess should be selected on the basis o! a !uture worth

Gs ospital wishes to replace its current <N0 e-uipment thata stateo!theart system. 7ystem L will have a "rst cost o!



4 1

%ear L ' ;/4#444

4 ; (1#*44#444.44) ; (#144#444.44)

1 ; (/4#444.44) ; (54#444.44) ;1#*44#444 ; (/4#444.44) ; (53#444.44) '

3 ; (/4#444.44) ; (5*#444.44)

6 ; (1#/4#444.44) ; (5:#444.44)

5 ; (/4#444.44) ; (*#444.44)

* ; (/4#444.44) ; (*5#444.44) 4 1

/ ; (/4#444.44) ; (*B#444.44) ;54#444

B ; 334#444.44 ; (/1#444.44)

@W T 19 ; (#56B#B43.1:) ; (#3:1#/:*.36)

W (;*#314#/6.B3) (;5#:1#:::.**)

7elect system ' ;#144#444

iB9

4 1

; (B54#/:.44)

;144#444

i19

; (*:4#46/./5) 4 1

;344#444

s usin8 an interest rate o! 149 per year.

<

%ear < ,

4 ; (154#444.44) ; (B44#444.44)

1 ; (54#444.44) ; (1#444.44) 4 1

; (54#444.44) ; (1#444.44)

3 ; (54#444.44) ; (1#444.44) ;54#444

6 ; (54#444.44) ; (1#444.44)

5 ; (6#444.44) ; (1#444.44)

n8 research directed toward sustainability. =he donor planse now (i.e.# six donations) so that ;144#444 per year cans interest at a rate o! B9 per year# how much money must

! ;35#444# and periodic costs every 5 years o! ;/5#444.



@W T 149 ; (336#5/1.:/) ;154#444

W ; (BB#5:.6) ; (1#444.44)

22 ; (BB#5:.6) ; (:4#444.44)

7elect <

iB9

1

;64#444

; (16#661.63)

y# you plan to start a permanent scholarship !und in theney now with the stipulation that the scholarships bet time that your dau8hter plans to be8in colle8e). =heto the principal o! the endowment. !ter that# the interestwant the amount o! the scholarships to be ;64#444 per

rate o! B9 per year?



i149 2ontract

;

16; 16; 16; 16; 16;

3 6 5 4

5; 5; 5; 5;

@W ;5#35B#:3.5/

i19 %

;#444

3 6 5 4

;:#444 ;:#444 ;:#444 ;:#444

@W ; 6*#34B.13 ;35#444



i*9

3 6: 54 4

;1*#444 ;1*#444 ;1*#444 ;1*#444

@W ; 6#3/#::6.66 ;3#*1#14

i149 344 mm

3 : 34 4

;3#444 ;3#444 ;3#444 ;3#444

@W ; 1B3#B4./6 ;14#444

i4./59 'ea!

;15#444



3 5: *4 4

;3#444 ;3#444 ;3#444 ;3#444

@W ; 5#61:.54 ;15#444

i149

3 6 5 * /

;:#444 ;:#444 ;:#444 ;:#444 ;:#444 ;:#444

;64#444 ;64#444 ;64#444

i149

3 6 5 * /

;*#444 ;*#444 ;*#444 ;*#444 ;*#444 ;*#444

;B4#444

i149

;/4#444 ;/4#444

3 6 5 *

;*4#444 ;*4#444 ;*4#444 ;*4#444 ;*4#444

;54#444 @W ; *4/#43:.13



i149

;:5#444

3 6 5 *

;64#444 ;64#444 ;64#444 ;64#444 ;64#444

@W ; 554#5B5.64

i149

3 6 5 *

;5#444 ;5#444 ;5#444 ;5#444 ;5#444

;*#444 @W ; */#314.6:

i149

3 6 5 *

;1#644 ;1#644 ;1#644 ;1#644 ;1#644

;#544

@W ; :4#:/5.*5



iB9

3 6: 54

;:4 ;:4 ;:4 ;:4

@W ; 133#56/./1

iB9

3 6: 54

;314

;334

;1#54 ;1#/4

@W ; *#33:.5/



i19 @roses W

;B4#444 ;B4#444

3 6 4 1

;*4#444 ;*4#444 ;*4#444 ;5#444

;/54#444 W ; #/#36/.4 ;1#354#444

i19

;644#444



3 6 5 * /

;/4#444 ;/4#444 ;/4#444 ;/4#444 ;/4#444 ;/4#444

;1#*44#444i19

3 6 5 * /

;53#444 ;5*#444 ;5:#444

;*#444 ;*5#444 ;*B#444

22 ; B54#/:.44

3 6 5 *

;144#444 ;144#444 ;144#444 ;144#444 ;144#444 ;144#444

22 ; *:4#46/./5

3 6 5 *

;35#444 ;35#444 ;35#444 ;35#444 ;35#444 ;35#444

;/5#444

i149 ,

;B#444

3 6 5

4

;54#444 ;54#444 ;54#444 ;54#444



22 ; BB#5:.6

22 ; 16#661.63

3 6 5 * / B

;64#444 ;64#444 ;64#444 ;64#444 ;64#444 ;64#444



i149

3.1; 3.1; 3.1; 3.1; 3.1;

1 3 6 5

; ; ; ; ;

@W ; 6#1*:#B*5.65

i149

;4#444

1 3 6 5

;/#444 ;/#444 ;/#444 ;/#444 ;/#444

@W ; 6B#BB6.:4



i149

;544#444

1 3 6: 54

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