What does retained earnings tell you about a firms dividend policy?

Does an increase in inventory turnover suggests that the firms profits have increased?

A firms days sales outstanding over the last three years were 60 days, 50 days, and 40 days. Its inventory turnover during the same period was 10, 8, and 6. During the same period, sales and accounts payable have not changed. What can you conclude concerning the firms cash conversion cycle?

A firm with sales of $3,000,000 has inventory of $600,000. The industry average for inventory turnover is 6 (60 days). To be competitive with the industry, what should be the firms inventory?