1. gross profit margin ( gross profit/ sales ) is an importang determinant of NOPAT. Identify two factors that can cause gross profit margin to decline. is a reduction in the gross profit margin always bad news? explain.

2. why is it important to disagree RNOA into new operation profit margin (NOPM) and net operating assets turnover (NOAT)?

3.what is the difference between the traditional ROA measure ( part of the traditional Dupont analysis) and the return of net operating assets (RNOA)?