The correct answer is A. 14.4%.
The money discount rate is the rate of interest that is used to calculate the present value of a future sum of money. It is calculated by subtracting the inflation rate from the real rate of return. In this case, the money discount rate is 14.4%, which is calculated by subtracting 40% from 10%.
The money discount rate is important because it is used to calculate the present value of future cash flows. This is important for making investment decisions, as it allows investors to compare the present value of different investment options.
The money discount rate is also important for financial planning, as it allows individuals to calculate the future value of their savings. This is important for retirement planning, as it allows individuals to determine how much money they need to save in order to reach their retirement goals.
Here is a brief explanation of each option:
- Option A: 14.4%. This is the correct answer. The money discount rate is calculated by subtracting the inflation rate from the real rate of return. In this case, the money discount rate is 14.4%, which is calculated by subtracting 40% from 10%.
- Option B: 2.5%. This is incorrect. The money discount rate is not equal to the real rate of return. The money discount rate is calculated by subtracting the inflation rate from the real rate of return. In this case, the money discount rate is 14.4%, which is calculated by subtracting 40% from 10%.
- Option C: 25%. This is incorrect. The money discount rate is not equal to the inflation rate. The money discount rate is calculated by subtracting the inflation rate from the real rate of return. In this case, the money discount rate is 14.4%, which is calculated by subtracting 40% from 10%.
- Option D: 14%. This is incorrect. The money discount rate is not equal to the real rate of return. The money discount rate is calculated by subtracting the inflation rate from the real rate of return. In this case, the money discount rate is 14.4%, which is calculated by subtracting 40% from 10%.