In preparing its August 31, 2017 bank reconciliation, Adel Corp. has available the following information: Balance per bank statement, 8/31/17 $21,650 Deposit in transit, 8/31/17 $3,900 Return of customer’s check for insufficient funds, 8/30/17 $600 Outstanding checks, 8/31/17 $2,750 Bank service charges for August $100 At August 31, 2017, Adel's correct cash balance is