Comprehensive analysis The December 31, 2005, balance sheet for Webb Corporation is presented here. These are the only accounts on Webb’s balance sheet. Amounts indicated by question marks (?) can be calculated using the following additional information.

Required Determine the following.

a. The balance in trade accounts payable as of December 31, 2005.

b. The balance in retained earnings as of December 31, 2005.

c. The balance in the inventory account as of December 31, 2005. (Assume that the level of inventory did not change from last year.)