You need to determine i* per year for the cash flows shown below. Since you have a new boss, you decided to perform a thorough analysis. Do the following:

(a) Use a spreadsheet to find i*.

(b) Develop two charts on the spreadsheet: a col­umn chart that plots cash flows versus year, and a scatter chart showing PW values versus a range of i values, one of which is i*. (Hint: Use Figure 7–4 as a guide.)

(c) You were told when handed the estimates that the rate of return was about 25%. Deter­mine the cash flows for years 2, 3, and 4 that are necessary to realize an i* of 25% per year, if they remain in the same proportion to each other as initially estimated.


(a) Enter cash flows for years 0 to 4 in cells B2:B6



Function = IRR(B2:B6) displays i* = 15.32%



(b) Two charts are included in spreadsheet with i* indicated between 15% and 16% on

the second (scatter) chart



(c) Use Goal Seek tool to change $9000 estimate in year 1 to $10,688 with multiples shown for years 3 and 4 estimates. Amounts needed are in cells B7 to B9.

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For the following five spreadsheet functions, (a) write the values of the engineering economy symbols P, F, A, i, and n, using a ? for the symbol that is to be determined, and (b) state whether the displayed answer will have a positive sign, a negative sign, or it can’t be determined from the entries.

(1) = FV(8%, 10, 3000, 8000) (2) = PMT(12%, 20, –16000) (3) = PV(9%, 15, 1000,600) (4) = NPER(10%, –290,, 12000) (5) = FV(5%, 5, 500, –2000) What will be an ideal response?

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Bristol-Myers-Squibb purchased a tablet-form­ing machine in 2010 for $750,000. The company planned to use the machine for 10 years and then sell it for $50,000; however, due to rapid obsolescence, it will be retired after only 6 years in 2016.

(a) Determine the capital investment remaining when the asset was prematurely retired. (b) If the asset is sold at the end of 6 years for $175,000, determine the capital investment loss based on straight line depreciation. (c) If the new-technology machine has an esti­mated cost of $260,000, how many more years would the company have had to depre­ciate the currently-owned machine to make its book value and the first cost of the new machine equal each other?

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A higher SEER means ____.

A. lower efficiency and higher energy bills B. better efficiency and higher energy bills C. lower efficiency and lower energy bills D. better efficiency and lower energy bills

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A certain frequency divider is made up of a divide-by-10 counter followed by a divide-by-2 counter. The total frequency division is

A) 20 B) 5 C) 12 D) Cannot be determined from the information supplied here.

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