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e-lub [12.9K]
2 years ago
6

The initial cost of a packed-bed degassing reactor for removing trihalomethanes from potable water is $84,000. The annual operat

ing cost for power, site maintenance, etc. is $13,000. If the salvage value of the pumps, blowers, and control systems is expected to be $9,000 at the end of 10 years, the AW of the packed-bed reactor, at an interest rate of 8% per year, is closest to:
Business
1 answer:
Thepotemich [5.8K]2 years ago
8 0

Answer:

-$24,900

Explanation:

Solution

Given:

The annual payment is defined as:

A = F [i /(1 + i)^n -1

Where,

F = The sum of amount accumulated

i = The interest rate (annual)

n = the number of years

The standard notation equation becomes this

=A = F (A/F, i, n)

Now,

The annual payment  is A = P [ i(1 + i)^n / (1 + i)^n -1

where

P = The present value,

i = The interest rate (annual)

n = the number of year

The standard notation equation becomes this

=A = P (A/P, i, n)

We recall that,

The first cost P is $84,000.

Now,

A = $13,000, S = $9,000,  n = 10 years, and i = 8 %

Thus,

AW =- 84000 ( A/ P 8% 10 ) - 13000 + 9000 (A/F, 8%, 10)

=-84000 (0.149) - 13000 + 9000 (0.069)

= -$24,900

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