LibGuides: CHE 432: Principles of Chemical Engineering Design : Cost ...
Aug 3, 2022So if the index indicates that 2007 is the base (i.e., 100) and for 2013 the index is "134", then the 2013 cost was 34% higher than the base point. If instead, the 2013 cost was 94, that would indicate that the cost had fallen 6% from the base. Chemical Engineering (magazine) Chemical Engineering