The following information was presented by Charlie Manufacturing Company for an asset purchased the previous year.

Original cost of the asset	$	20,000
Useful life of the asset		10	Years
Cash flow annual operating profit	$	6,400
Salvage value	$	-0-

What is the return on investment (ROI) assuming Charlie (a) uses the straight-line method for depreciation and (b) average net book values to compute ROI? (Round your final answer to 2 decimal places.)

32.00%.

25.88%.

35.56%.

37.65%.