X Company must decide whether to continue using its current equipment or replace it with new, more efficient equipment. The following information is available for the current and new equipment:

Current equipment
Current sales value	$16,000
Final sales value	3,600
Operating costs	67,240
New equipment
Purchase cost	$166,000
Final sales value	3,600
Operating costs	38,625

The current and new equipment will last for 6 years. If X Company replaces the current equipment, what is the approximate internal rate of return?