why is our operating profit margin lower than the industry standard and our gross profit margin higher than the industry standard?

Builtrite's upper management has been comparing their books to industry standards and came up with the following question: Why is our operating profit margin lower than the industry standard and our gross profit margin higher than the industry standard? Builtrite has lower than average operating expenses Builtrite has higher than average operating expenses Builtrite has lower than average interest expense Builtrite has higher than average interest expense