Answer:
The divisional net operating income is $20,480
Step-by-step explanation:
In order to calculate the net income from the return on investment formula which is net income divided by average operating assets,the value of operating assets needs to be determined using asset turnover ratio.
Asset turnover =sales/average operating assets
asset turnover is 4 times
sales is $640,000
average operating assets is unknown
4=$640,000/average operating assets
average operating assets=$640,000/4
average operating assets=$160,000
Hence we can now determine net income from ROI formula:
return on investment=net income/average operating assets
return on investment is 12.8%
net income is unknown
average operating assets is $160,000
12.8%=net income/160,000
net income=160000*12.8%=$20,480