I'm trying to figure out the ratios efficiency ratios for Dunkin' Donuts for fiscal 2014. Their 'inventory turnover' and 'days in inventory' are 0 (unreported). The 'days in receivable' is 25.12 and 'days in payable' is 30.33. Would it still be possible to calculate the 'operating cycle' without the 'days in inventory'? What I got for the operating cycle is -5.21.

I'm also having trouble figuring out the Defensive Interval Ratio for Starbucks and Dunkin' Donuts for fiscal 2014. Can you please help me with that?