In its 1995 Annual Report McDonald's Corporation report beginning total assets of \(\$ 13.6\) billion; ending total assets of \(\$ 15.4\) billion; property, plant and equipment (at cost) of \(\$ 17.1\) billion; accumulated depreciation of \(\$ 4.3\) billion; depreciation expense of \(\$ 620\) million; and net sales of \(\$ 9.8\) billion.

(a) Compute the average life of McDonald's property, plant, and equipment.

(b) Compute the average age of McDonald's property, plant, and equipment.

(c) Compute McDonald's asset turnover ratio.