Contingent Bank has the following balance sheet in market value terms (in millions of dollars).

Assets

Liabilities

Cash

$20

Deposits

$220

Mortgages

220

Equity

20

Total assets

$240

Total liabilities and equity

$240

In addition, the bank has contingent assets with $100 million market value and contingent liabilities with $80 million market value. What is the true stock holder net worth? What does the term contingentmean?