Luke purchased an automobile for $5000 and the value of the automobile decreases by 20% each year. How many years from the date of purchase will the value of the automobile be $3200 ?

Thank you.

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- April 8th 2010, 06:02 PMsahipGeometric Sequence
Luke purchased an automobile for $5000 and the value of the automobile decreases by 20% each year. How many years from the date of purchase will the value of the automobile be $3200 ?

Thank you. - April 8th 2010, 06:28 PMskeeter