It appears the PDF contains exercises related to "Simple Interest," but I need more information or a specific question about which part of the exercise you're referring to.

Could you please clarify which question or section you'd like me to address, or provide a bit more context?

Feel free to upload a photo or specify the part that needs solving!

1. What is simple interest, and how is it calculated?
2. Can you explain how to rearrange the formula for different variables (principal, rate, time)?
3. How does compound interest differ from simple interest?
4. What role does time play in simple interest calculations?
5. How can I apply the simple interest formula in real-life financial decisions?

Tip: Always ensure you know the units of each variable when using financial formulas, as interest rates might be expressed annually or differently depending on the context!