Huston Company, a manufacturer of office supplies, provides the following financial information

Pen Division Pencil Division
Operating income $100,000 $40,000
Net sales $500,000 $150,000
Total assets at Jan. 1 $580,000 $350,000
Total assets at Dec. 31 $610,000 $300,000

Calculate the return on investment for the Pen Division. (Round your answer to two decimal places.)
A) 16.81%
B) 12.31%
C) 17.24%
D) 16.39%

A .A)
ROI =

Average total assets =

Average total assets = = 595,000
ROI = $100,000 = 16.81%
$595,000