Prepare a November 30 Balance Sheet in Proper Form for Green

Prepare a November 30 balance sheet in proper form for Green Bay Delivery Service from the following alphabetical list of the accounts at November 30:
$$\begin{array} { | l | r | } \hline \text { Accounts receivable } & \$ 10,000 \\\hline \text { Accounts payable } & 18,000 \\\hline \text { Building } & 28,000 \\\hline \text { Common stock } & 30,000 \\\hline \text { Cash } & 8,000 \\\hline \text { Notes payable } & 45,000 \\\hline \text { Office equipment } & 12,000 \\\hline \text { Retained earnings } & ? \\\hline \text { Trucks } & 55,000 \\\hline\end{array}$$