What am I doing wrong?

Modify Acron's model so that development lasts for an

extra year. Specifically, assume that development costs

of $7.2 million and $2.1 million are incurred at the

beginnings of years 1 and 2, and then the sales in the

current model occur one year later, that is, from year

2 until year 21. Again, calculate the NPV discounted

back to the beginning of year 1, and perform the same

sensitivity analyses. Comment on the effects of this

change in timing.

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