Question 906414:  For a car loan using simple interest at a given rate, the amount of interest charged varies jointly with the loan amount (also known as the principal) and the time of the loan (in years). If a $15,000 car loan earns $2,610 in simple interest over 6 years, how much interest will $32,000 car loan earn over 7 years?  
 Answer by stanbon(75887)      (Show Source): 
You can  put this solution on YOUR website! For a car loan using simple interest at a given rate, the amount of interest charged varies jointly with the loan amount (also known as the principal) and the time of the loan (in years). If a $15,000 car loan earns $2,610 in simple interest over 6 years, how much interest will $32,000 car loan earn over 7 years? 
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I = P*r*t 
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Solve for "r": 
2610 = 15000*r*6 
r = 2610/90000 = 0.029 
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Solve for "I" 
I = 32000*0.029*7 
I = $6496 
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Cheers, 
Stan H.------------ 
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