Correcting inventory errors

An internal audit at Parker Corporation discovered the following inventory valuation errors:

  • The 2010 year-end inventory was overstated by $34 000.
  • The 2011 year-end inventory was understated by $70 000.
  • The 2012 year-end inventory was understated by $23 000.

The reported income before tax for Parker was:

2010

$142,000

2011

$273,000

2012

$170,000

Required

Determine what income before taxes for 2010, 2011, and 2012 should have been after correcting for the errors.