A family friend has asked for your help in analyzing the operations of three anonymous companies. Supply the missing data in the tabulation below: (Negative amounts should be indicated with a minus sign.)

	Company
	A		B		C
Sales	$10,900,000		$6,700,000		$9,000,000
Net operating income	805,600		238,000		1,488,000
Average operating assets	4,240,000		1,700,000		6,200,000
Return on investment	19	%	14	%	24	%
Minimum required rate of return:
Percentage	17	%	20	%	??????	%
Dollar amount	720,800		340,000		?????
Residual income (loss)	84,800		(102,000)		186,000

how do you find the dollar amount and percentage of part C?