Dominique's lowest yield with reinvestment is 10.14% and her highest is 14.79%.
How to solve
Dominique's Bond Yields:
Part (a) - Without Reinvestment:
Lowest Yield: This occurs if Dominique holds the bond until maturity (year 10) and receives no call. In this case, she receives the face value ($40,000) and all 10 annual coupons ($8,000 each).
Holding period yield:
Total payments = $40,000 (face value) + 10 * $8,000 (coupons) = $120,000
Compound interest factor (1 + 8%)^10 = 5.1597
Holding period yield = (Total payments / Purchase price) / Compound factor
Holding period yield = ($120,000 / $41,248) / 5.1597 = 8.35%
Highest Yield: This occurs if Dominique is called at the end of year 6. Here, she receives the call price ($40,000 + $300(10 - 6) = $46,200) and 6 annual coupons.
Yield to call:
Total payments = $46,200 (call price) + 6 * $8,000 (coupons) = $62,200
Compound factor (1 + 8%)^6 = 2.176
Yield to call = (Total payments / Purchase price) / Compound factor
Yield to call = ($62,200 / $41,248) / 2.176 = 13.31%
Therefore, Dominique's lowest yield without reinvestment is 8.35% and her highest is 13.31%.
Part (b) - With Reinvestment:
Lowest Yield: This occurs again if Dominique holds the bond until maturity (year 10). Now, she reinvests all coupon and redemption payments at 6%.
Holding period yield:
Total payments = $120,000 (as in part a)
Compound interest factor considering reinvestment = 1.06^10 = 1.8383
Holding period yield (with reinvestment) = (Total payments / Purchase price) / Compound factor
Holding period yield (with reinvestment) = ($120,000 / $41,248) / 1.8383 = 10.14%
Highest Yield: Similar to part (a), this occurs if Dominique is called at the end of year 6. However, now she reinvests the call price and remaining coupons at 6%.
Yield to call (with reinvestment):
Total payments = $62,200 (as in part a)
Compound interest factor considering reinvestment = 1.06^6 = 1.4185
Yield to call (with reinvestment) = (Total payments / Purchase price) / Compound factor
Yield to call (with reinvestment) = ($62,200 / $41,248) / 1.4185 = 14.79%
Therefore, Dominique's lowest yield with reinvestment is 10.14% and her highest is 14.79%.