In: Economics
1- A company purchased a quality control system for $48,953 which requires $7,043 per year maintenance fees for the first 5 years, after which the maintenance fees will increase by 12% per year for the upcoming 7 years. Determine the equivalent total present worth value of preached system during the 12 years operation at i = 15% per year.
2- For the below Cash Flow find PW using 10% interest rate.
| years | $ cost |
| 0 | 3,760 |
| 1 | - |
| 2 | - |
| 3 | 3,000.00 |
| 4 | 3,100.00 |
| 5 | 3,200.00 |
| 6 | 3,300.00 |
| 7 | 3,400.00 |
| 8 | 3,500.00 |
The given data are executed in excel.

1. PW = -$102,316
2. PW = $15,358
The excel calculation are given below:

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