Inventory turnover and number of days' sales in inventory

Financial statement data for years ending December $31$ for Tango Company follow:

Required

a$.$ Determine the inventory turnover for $20$ Y $7$ and $20$Y$6.$ Round your answers to one decimal place.

b$.$ Determine the days' sales in inventory for $20$ Y $7$ and $20$Y$6.$ Use $365$ days a year. Round your answers to one decimal place.

c$.$ Are the changes in inventory turnover and the days' sales in inventory from $20Y6$ to $20Y7$ favorable or unfavorable?