BD_SM05 - Chapter 5 Interest Rates 5-1. a. Since 6 months...

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Chapter 5 Interest Rates 5-1. a. Since 6 months is 6 1 24 4 = of 2 years, using our rule ( 29 1 4 1 0.2 1.0466 + = So the equivalent 6 month rate is 4.66% b. Since one year is half of 2 years ( 29 1 2 1.2 1.0954 = So the equivalent 1 year rate is 9.54% c. Since one month is 1 24 of 2 years, using our rule ( 29 1 24 1 0.2 1.00763 + = So the equivalent 1 month rate is 0.763% 5-2. If you deposit $1 into a bank account that pays 5% per year for 3 years you will have ( 29 . . = 3 1 05 1 15763 after 3 years a. If the account pays 1 2 2 % per 6 months then you will have ( 29 6 1.025 1.15969 = after 3 years, so you prefer 1 2 2 % every 6 months b. If the account pays 1 2 7 % per 18 months then you will have ( 29 2 1.075 1.15563 = after 3 years, so you prefer 5% per year c. If the account pays 1 2 % per month then you will have ( 29 36 1.005 1.19668 = after 3 years, so you prefer 1 2 % every month 5-3. Timeline: 0 7 14 42 70,000 70,000 70,000 Because ( 29 7 1.06 1.50363 = , the equivalent discount rate for a 7-year period is 50.363%. Using the annuity formula ( 29 6 70,000 1 PV 1 $126,964 0.50363 1.50363 = - =
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36 Berk/DeMarzo • Corporate Finance 5-4. For a $1 invested in an account with 10% APR with monthly compounding you will have 12 0.1 1 $1.10471 12 + = So the EAR is 10.471% For a $1 invested in an account with 10% APR with annual compounding you will have ( 29 1 0.1 $1.10 + = So the EAR is 10% For a $1 invested in an account with 9% APR with daily compounding you will have 365 0.09 1 1.09416 365 + = So the EAR is 9.416% 5-5. Using the formula for converting from an EAR to an APR quote k APR 1 1.05 k + = Solving for the APR ( 29 ( 29 1 k APR 1.05 1 k = - With annual payments k = 1, so APR = 5% With semiannual payments k = 2, so APR = 4.939% With monthly payments k = 12, so APR = 4.889% 5-6. Using the PV of an annuity formula with N = 10 payments and C = $100 with r = 4.067% per 6 month interval, since there is an 8% APR with monthly compounding: 8% / 12 = 0.6667% per month, or (1.006667)^6 – 1 = 4.067% per 6 months. 10 1 1 PV 100 1 $808.39 .04067 1.04067 = × - =
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Chapter 5 Interest Rates 37 5-7. Timeline: 0 1 2 1 4 0 1 2 8 10,000 10,000 10,000 4% APR (semiannual) implies a semiannual discount rate of 4% 2% 2 = So, ( 29 8 10,000 1 PV 1 0.02 1.02 $73, 254.81 = - = 5-8. Using the formula for computing the discount rate from an APR quote: 5 Discount Rate 0.41667% 12 = = 5-9. Timeline: 0 1 2 3 4 60 –8,000 C C C C C 5.99 APR monthly implies a discount rate of 5.99 0.499167% 12 = Using the formula for computing a loan payment ( 29 60 8,000 C $154.63 1 1 1 0.00499167 1.00499167 = = - 5-10. Timeline: 0 1 2 3 4 360 –150,000 C C C C C ( 29 1 12 1 0.05375 1.0043725 + =
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38 Berk/DeMarzo • Corporate Finance So 3 8 5 % EAR implies a discount rate of 0.43725% Using the formula for computing a loan payment ( 29
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This note was uploaded on 12/28/2009 for the course FEWEB CORPFIN taught by Professor Dorsman during the Spring '09 term at Vrije Universiteit Amsterdam.

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BD_SM05 - Chapter 5 Interest Rates 5-1. a. Since 6 months...

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