168,000 is amount of the gain is Ethan allowed to exclude from his gross income
Solution:
Ethan's post 2009 non-qualified use is 2 years.
He owned the property for 10 years so he is not allowed to exclude 20% of the gain
= $210,000 × 20% = $42,000
He is allowed to exclude = ($210,000 - $42,000)
= $168,000