if inventories increased during the period, cost of sales understates the cash outflows for purchases,and the inventory increase must therefore be added to cost of sales to deduce the cash outflows. but adding to cost of sales, an expense amount, is equivalent to subtracting from net income. thus, if inventories increased, the amount of the increase is subtracted from net income to adjust income to a cash flow basis. for fairway corporation, the inventories' increase during 2006 was $47000. thus,$47000 must be subtracted from 2006 net income to adjust cost of sales from an expense amount to a cash outflow amount.