=+SA 17-2 Receivables and inventory turnover The condensed income statements through income from operations for Dell Inc. and Apple Computer, Inc., are reproduced below for recent fiscal years (numbers in millions of dollars).

Apple Dell Inc. Computer, Inc.

Sales (net) $57,420 $24,006 Cost of sales 44,904 15,852 _______ _______ Gross profit $12,516 $ 8,154 _______ _______ Selling, general, and administrative expenses $ 5,948 $ 2,963 Research and development 498 782 _______ _______ Operating expenses $ 6,446 $ 3,745 _______ _______ Income from operations $ 6,070 $ 4,409 _______ _______ _______ _______ Prepare comparative common-sized statements, rounding percents to one decimal place. Interpret the analyses.