car loan at an interest rate of 9% compounded monthly to be repaid over 60 months, where 9% is the nominal annual interest rate. Some students incorrectly used 9% as the monthly interest rate. A monthly interest rate of 9% is equivalent to what effective annual interest rate? (a) Effective annual interest rate = 9% (b) Effective annual interest rate = 9% per month x 12 months per year = 108% (c) Effective annual interest rate = 9% per month ÷ 12 months per year = 0.75% (d) Effective annual interest rate = (1 + effective monthly rate)12 – 1 = (1.09)12 – 1 - 181%

ENGR.ECONOMIC ANALYSIS
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ISBN:9780190931919
Author:NEWNAN
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Chapter1: Making Economics Decisions
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A problem on the midterm exam asked you to calculate the monthly payment on a $15,000
car loan at an interest rate of 9% compounded monthly to be repaid over 60 months, where
9% is the nominal annual interest rate. Some students incorrectly used 9% as the monthly
interest rate. A monthly interest rate of 9% is equivalent to what effective annual interest
rate?
(a) Effective annual interest rate = 9%
(b) Effective annual interest rate = 9% per month x 12 months per year = 108%
(c) Effective annual interest rate = 9% per month ÷ 12 months per year
0.75%
(d) Effective annual interest rate = (1+ effective monthly rate)12 – 1 = (1.09)12 –
1 = 181%
Transcribed Image Text:A problem on the midterm exam asked you to calculate the monthly payment on a $15,000 car loan at an interest rate of 9% compounded monthly to be repaid over 60 months, where 9% is the nominal annual interest rate. Some students incorrectly used 9% as the monthly interest rate. A monthly interest rate of 9% is equivalent to what effective annual interest rate? (a) Effective annual interest rate = 9% (b) Effective annual interest rate = 9% per month x 12 months per year = 108% (c) Effective annual interest rate = 9% per month ÷ 12 months per year 0.75% (d) Effective annual interest rate = (1+ effective monthly rate)12 – 1 = (1.09)12 – 1 = 181%
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