Answer:
$620,000
Explanation:
Calculation to determine what Net fixed assets at the end of 2015 were:
$1,440,000 / Average fixed assets
$1,440,000 / $480,000=3.0
Net fixed assets =[(340,000 + x) / 2] = $480,000
Solve for x
Net fixed assets= $620,000
Therefore Net fixed assets at the end of 2015 were:$620,000