Recently, a cast iron leaf pressure filter with 100ft2was purchased for clarifying an inorganic liquid stream for $15000. In a similar application, the company will need a 450ft2 cast iron leaf...

Recently, a cast iron leaf pressure filter with 100ft2was purchased for clarifying an inorganic liquid stream for $15000. In a similar application, the company will need a 450ft2 cast iron leaf pressure filter. The size exponent for this filter is 0.6. Estimate the purchased price of the 450ft2 unit.

A stainless steel centrifuge costs $83000 in 1990. What is the cost of that same centrifuge in 2001? Use the CE Index?