(Solved): j The City of San Antonio is considering various options for providing water in its 50 year plan, in ...

The City of San Antonio is considering various options for providing water in its 50 year plan, including desalting. One brackish aquifer is expected to yield desalted water that will generate revenue of $$\$4.1$$ million per year for the first 4 years, after which less production will decrease revenue by $$10\%$$ per year each year. If the aquifer will be totally depleted in 22 years, what is the present worth of the desalting option revenue at an interest rate of $$7\%$$ per year? The present worth of the desalting option revenue at an interest rate of $$7\%$$ per year is determined to be $$\$$$