Selected data from O'Brien Ltd. are presented below: 
Instructions
Calculate the profitability ratios that can be derived from the above information.
Definitions:
Checking Account
A bank account that allows for numerous withdrawals and deposits, intended primarily for daily transactions.
Check Register
A record book used to track checks written, deposits made, and the current balance of a checking account.
Endorser
Signature on the back of the check of the payee.
Endorsement
An act of giving one's public approval or support to someone or something, often used in contexts of advertisements or political backing.
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