BALANCE OF FOUR BANK ACCOUNTS BEFORE THE TRANSACTION
Account B has a starting balance of $2,100. Three transactions are performed on that account:
$500 is transferred FROM Account D TO Account B.
$100 is transferred FROM Account C TO Account B.
$1,500 is transferred FROM Account B TO Account A.
To calculate the account B’s new balance the following formula is applied: (starting account B balance) + (sum of deposits to account B) – (sum of withdrawals from account B) = new account B balance. Consequently, account B’s new balance is of: $2,100 + ($500 + $100) – $1,500 = $1,200.