Following is a partial adjusted trial balance for Accel Inc. for its year ended December 31, 2020. Acct. No. Description Retained earnings $ Debit Credit 310 $960,000 315 Dividends 10,400 400 Sales 640,000 405 Consulting revenue 40,000 500 Cost of goods sold 400,000 502 Salaries expense 64,000 510 Supplies expense 5,600 515 Insurance expense 9,600 520 Interest expense 1,600