Key figures for Apple and Google follow.

Required
1. Compute return on total assets for Apple and Google for the two most recent years.
2. Separate the return on total assets computed in part 1 into its components for both companies and both years according to the formula in Exhibit 15.9.
3. Which company has the highest total return on assets? The highest profit margin? The highest total asset turnover? What does this comparative analysis reveal? (Assume an industry average of 10.0% for return on assets.)

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Apple Google Current 1 Year Prior 2 Years Prior Current Year 1 Year Prior 2 Years Prior 车millions Net income Net sales Total assets Year 53,394 39,510 37,03716,348 14,136 12,733 233,715 290,479 182,795 231,839 170,910 207,000 74,989 147,461 66,001 129.187 55,519 109,050