Answer:
Gross profit margin =  33.7%
 Operating expenses = $184,300
Explanation:
The gross margin is the percentage of sales value is earned as gross profit.
Gross profit   =  Sales - cost of goods sold 
                            =847,000 -561,500 =$285,500
<em>Gross profit margin = (Sales - cost of goods sold)/sales ×  100</em>
                                 =  (847,000 -561,500/847,000)  ×  100
                                  =  33.7%
<em>Operating expenses represent the amount of indirect cost expenditures which cannot be traced to the cost of the goods sold . This include administrative expenses like rent, insurance e.t.c</em>
<em>Operating expense = Gross profit - Net income</em>
                                 = (847,000 -561,500)   -  101,200
                                 = 184,300