Hartman, Inc. has prepared the following comparative balance sheets for 2010 and 2011:

2011 2010

Cash $ 297,000 $ 153,000

Receivables 159,000 117,000

Inventory 150,000 180,000

Prepaid expenses 18,000 27,000

Plant assets 1,260,000 1,050,000

Accumulated depreciation (450,000) (375,000)

Patent 153,000 174,000

$1,587,000 $1,326,000

Accounts payable $ 153,000 $ 168,000

Accrued liabilities 60,000 42,000

Mortgage payable