Please help. What is the answer to #13? Thanks.

E6-13 This information is available for Abdullah's Photo Corporation for 2015, 2016, and Compute inventory turnover 2017 days in inventory, and gross profit rate. (LO 4) 2015 2016 2017 Beginning inventory 100,000 Ending inventory Cost of goods sold Sales revenue 300,000 400,000 400,000 1,152,000 1,200,000 ,600,000 ,900,000 300,000 900,000 480,000 1,300,000 Instructions Calculate inventory turnover, days in inventory, and gross profit rate (from Chapter 5) for Abdullah's Photo Corporation for 2015, 2016, and 2017. Comment on any trends