Rainey Company's true cash balance at October 31 is $4,700. The following information is available for the bank reconciliation: Outstanding checks, $740 Deposits in transit, $540 Bank service charges, $110 The bank had collected an account receivable for Rainey Company, $1,200 The bank statement included an NSF check written by one of Ramsey's customers for $720. What was the unadjusted book balance at October 31