ok Gandolfi Construction Co. purchased a CAT 336DL earth mover at a cost of $505,000 in January 2019. The company's estimated useful life of this heavy equipment is 10 years, and the estimated salvage value is $93,000 Assume that Gandolfi Construction Co. calculated depreciation expense for the CAT 336DL earth mover on the straight-line method and reported $600,600 of net income for the year ended December 31, 2019. The company's average total assets for 2019 were $3,900,000 Required: a. Calculate Gandolfi's ROI for the year ended December 31, 2019. Return On Investment for the year ended December 31, 2019 ht Choose Numerator: Net income $ ences Choose Denominator: 1 Average total assets RO ROI 600,600 3,900,000 15.4% b. Calculate what Gandolff's ROI would have been for the year ended December 31, 2019, had the company used the double- declining-balance depreciation method for the CAT 336DL earth mover. Ignore the effects of income taxes. Return On Investment for the year ended December 31, 2019 Choose Numerator: 1 Choose Denominator: H 11 ROI ROI