1. From historical data, you discover that the na- tional average construction cost of middle schools is $10,500 per student. If the city index for El Paso is 76.9 and for Los Angeles it is 108.5, estimate the total construction cost for a middle school of 800 students in each city.
2. A consulting engineering firm is preparing a pre- liminary cost estimate for a design/construct proj- ect of a brackish groundwater desalting plant. The firm, which completed a similar project in 2001 with a construction cost of $30 million, wants to use the ENR construction cost index to update the cost. Estimate the cost of construction for a similar- size plant in mid-2006 when the index value was 7700.