Where can you find the necessary information to determine a firms profitability? Describe the financial ratios used

Question:

Where can you find the necessary information to determine a firm’s profitability? Describe the used to measure profitability.
Financial Ratios
The term is enough to curl one's hair, conjuring up those complex problems we encountered in high school math that left many of us babbling and frustrated. But when it comes to investing, that need not be the case. In fact, there are ratios that,...