Math Problem Statement
Betty and Bob buy a 20-year bond with a coupon rate of 7% per annum payable semiannually and a face and redemption value of $1000 and which is priced to yield 10% per annum compounded semiannually.find the Macaulay duration.
Solution
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Math Problem Analysis
Mathematical Concepts
Bond Valuation
Macaulay Duration
Time Value of Money
Present Value
Formulas
PV_{coupon} = \frac{C}{(1 + r)^t}
PV_{face value} = \frac{F}{(1 + r)^n}
Bond Price = \sum_{t=1}^{n} \frac{C}{(1 + r)^t} + \frac{F}{(1 + r)^n}
Macaulay Duration = \frac{\sum_{t=1}^{n} t \times \frac{C}{(1 + r)^t} + n \times \frac{F}{(1 + r)^n}}{\text{Bond Price}}
Theorems
Present Value Theorem
Bond Duration Theorem
Suitable Grade Level
College Level - Finance or Economics
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