This assignment discusses the use of tools and techniques for decision making in a business context. It presents two project options, A and B, with different cash flows and initial investments. The study uses three methods to evaluate the profitability of each project: Net Present Value (NPV), Accounting Rate of Return, and Internal Rate of Return. According to these methods, Project B is more profitable than Project A, with a higher NPV, accounting rate of return, and internal rate of return. The study concludes that using these tools helps businesses make optimal decisions and evaluate past and future performance.