Solution:Example 6.6; @ 7%(a) Present worth of costs = $17 548 845; Present worth of revenues = $43 293 217; Average net revenues over 25 years of construction and operation = $2 209 138

these are the solutions, please can you show how we arrive at the answers with methods been shown, thanks

An agency obtains $20,000,000 in order to construct a project by borrowing five equal beginning-of- year amounts. The project is then operated for twenty years. At the end of the first year of operation, the project is credited with $5,000,000 of revenues, and the revenues increase by $100,000 per year for each year of operation. Estimate the present worth of the revenues and costs, and the average net revenues (with the effect of interest) over the twenty-five years of construction and operation. Take 7 percent interest into account for all calculations