Penny Williams is contemplating the purchase of a new computer system for her company, Williams Manufacturing. She has made the following estimates:

Required:

a. Determine the internal rate of return for the computer purchase.

b. Indicate whether the computer purchase should be accepted under each of the following assumptions.
1. The cost of capital is 9 percent.
2. The cost of capital is 11 percent.
3. The cost of capital is 13 percent.
4. The cost of capital is 15 percent.

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Initial outlay Annual cash savings Estimated life of the computer Estimated residual value of the computer $18,023.88 $5,000.00 5 years $0