Bank statement would contains the following things as mentioned below:
1) A bank statement is a important document which is sent to the company by the bank to maintain records whereas a check register is maintained by the company which recorded the checks issued in the particular time.
2) A bank statement would contain the deposits and withdrawals details that are made in the past months and the balance at the end of the month whereas a check register would contains name of payee and the reason for the payment etc.
We can find the answer by subtracting 185 from 420 miles since there is (answer) more miles to travel, that would mean that if added to 185, we would get 420