A person’s credit score is important in determining the interest rate they have to pay on a home mortgage. According to Consumer Credit Counseling Service, a homeowner with a $100,000 mortgage and a 580 credit score will pay $90,325 more in interest charges over the life of a 30-year loan than a homeowner with the same mortgage and a credit score of 720. How much higher would the interest rate per year have to be in order to account for this much difference in interest charges, if the $100,000 loan is repaid in a single lump sum payment at the end of 30 years?

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
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Chapter1: Making Economics Decisions
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A person’s credit score is important in determining
the interest rate they have to pay on a home mortgage.
According to Consumer Credit Counseling Service,
a homeowner with a $100,000 mortgage and a 580
credit score will pay $90,325 more in interest charges
over the life of a 30-year loan than a homeowner with
the same mortgage and a credit score of 720. How
much higher would the interest rate per year have to
be in order to account for this much difference in interest
charges, if the $100,000 loan is repaid in a single
lump sum payment at the end of 30 years?

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