I did all the work but somehow i am getting different balance amounts. Can someone tell me what i am doing wrong?

Bank Reconciliation and Entries

The cash account for Brentwood Bike Co. at May 1 indicated a balance of $13,070. During May, the total cash deposited was $64,980 and checks written totaled $60,330. The bank statement indicated a balance of $22,030 on May 31. Comparing the bank statement, the canceled checks, and the accompanying memos with the records revealed the following reconciling items:

1. Checks outstanding totaled $9,810.
2. A deposit of $7,990, representing receipts of May 31, had been made too late to appear on the bank statement.
3. The bank had collected for Brentwood Bike Co. $4,220 on a note left for collection. The face of the note was $3,900.
4. A check for $270 returned with the statement had been incorrectly charged by the bank as $720.
5. A check for $850 returned with the statement had been recorded by Brentwood Bike Co. as $580. The check was for the payment of an obligation to Adkins Co. on account.
6. Bank service charges for May amounted to $40.
7. A check for $970 from Jennings Co. was returned by the bank because of insufficient funds.

Instructions:

1. Prepare a bank reconciliation as of May 31.

Brentwood Bike Co.
Bank Reconciliation
May 31
Cash balance according to bank statement		$22030
Add deposit of May 31, not recorded by bank	$7990
Add bank error in charging check as $720 instead of $270	450	8440
		$30470
Deduct outstanding checks		(9810)
Adjusted balance		$20660
Cash balance according to company's records		$17720
Add note and interest collected by bank		4220
		$21940
Deduct check returned because of insufficient funds	$970
Deduct bank service charges	40
Deduct bank error in charging check as $720 instead of $270	450	1460
Adjusted balance		$20480