Answer:
profit margin 7.77%
<em><u>Interpretation: </u></em> from evey dollar of sales the firm achieves almost 8 cent of net income
inventory turnover ratio 3.45
<em><u>Interpretation: </u></em>the inventory is sold 3 and a half times during the year
Explanation:
the profit margin is the quotient between net income and sales.

127,500 / 1,640,000 = 7.77%
the inventory turnover wil be the cost of good sold over the average inventory during the year
(312,500 + 257,500)/ 2 = 285,000
982,500 / 285,000 = 3,447368421