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24 Feb 2019

The City of New York is planning to build a library in its downtown area. Due to budgetary

constraint, the City faces the decision on whether to build it all now (full development), or build

part now (delayed plan) and complete the project in 10 years later.

The City hires you to do a present cost analysis to compare the options described below for

perpetual life at 4% effective interest rate:

1. First cost Full development Delayed plan

$1,800,000 $900,000 now

________________________________________ $1,100,000 in 10 years

2. Annual disbursements _______ $140,000/yr $80,000/yr for 10 years

$160,000/yr thereafter

Clearly describe your engineering economic analysis and state your suggestion to the City of

New York.

Make sure to use:

To find the equivalent P

–PV(i,n,A,F,Type)

To find the equivalent A

–PMT(i,n,P,F,Type)

To find the equivalent F

–FV(i,n,A,P,Type)

To find n

NPER(i,A,P,F,Type)

To find i

RATE(n,A,P,F,Type,guess)

Where:

i = interest

n = number of periods

A = Annual Value (or Worth)

P = Present Value (or Worth)

F = Future Value (or Worth)

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Lelia Lubowitz
Lelia LubowitzLv2
24 Feb 2019

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