Avergaing balance sheet values for ratios

Hi I am trying to worth out whether CFA requires us to average balance sheet values for use in liquidity ratios and working capital management (receivables, inventory and payables turnover). There is some divergence between CFA and Schweser and in the end of r46 questions answers CFA does not average the inventory in one of the questions. Any guidance gratefully recieved. S ps. i have the fear - you know, the one that makes you wake in the middle of the night to run and check you can remember the trade credit effect formula. 39 days and counting!!!

you should average for CFA purposes…