Detailed Answer
Correct answer: (C)
$420,000.
[$1,480,000 ÷ Average fixed assets = 4.0
Average fixed assets = $370,000,
therefore net fixed assets at the end of 2010 must be $420,000
[($320,000 + x) ÷ 2] = $370,000;
$320,000 + x = $740,000; x = $420,000]