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Multiple Choice
Which formula is used to calculate the present value (PV) of a perpetuity given a constant perpetual cash flow (C) and a discount rate (r)?
A
PV = C \times (1 + r)
B
PV = C \times r
C
PV = \frac{C}{r}
D
PV = \frac{C}{1 + r}
Verified step by step guidance
1
Understand the concept of perpetuity: A perpetuity is a type of financial instrument that provides constant cash flows indefinitely. The present value (PV) of a perpetuity represents the value today of all future cash flows.
Identify the variables in the formula: 'C' represents the constant perpetual cash flow, and 'r' represents the discount rate. The discount rate is used to account for the time value of money.
Recall the formula for the present value of a perpetuity: The correct formula is PV = \frac{C}{r}. This formula is derived from the principle that the present value of an infinite series of cash flows is calculated by dividing the cash flow by the discount rate.
Understand why the other formulas are incorrect: For example, PV = C \times (1 + r) incorrectly multiplies the cash flow by the discount rate plus one, which does not account for the perpetuity concept. Similarly, PV = \frac{C}{1 + r} incorrectly divides the cash flow by the discount rate plus one, which is not the correct method for perpetuities.
Apply the correct formula: To calculate the present value of a perpetuity, divide the constant cash flow (C) by the discount rate (r) using the formula PV = \frac{C}{r}. Ensure that the discount rate is expressed as a decimal (e.g., 5% as 0.05) before performing the calculation.