Gray Company's General Ledger account for supplies appears as follows on Dec. 31. How much is needed to adjust (update) Gray's Supplies account? If no amount is needed, leave the cell, or cells, blank. 5 Gray Company's General Ledger account for supplies appears as follows on Dec. 31. How much is needed to adjust (update) Gray's Supplies account? If no amount is needed, leave the cell, or cells, blank