the required rate of return & weighted cost of capital is 20%?

with the following income statement for two divisions the bucket & grappler divisions.

Calculate the return on investment, residual income, economic value added and operating income

(in thousands) Grappler Division Bucket Division Total sales 1 5.000 21 .000 Total costs 12.300 18,100 Operating income 2.?00 2,900 Current assets 300 200 Long-term assets 1 1.000 15,000 Total Assets 1 1.300 15,200 Current liabilities 3,000 8.000