SOLUTION: Katerina Labov inherited some money and invested it at 6% simple interest. At the end of the year, the total amount of her original principal and the interest was $12,720. How muc

Question 909253: Katerina Labov inherited some money and invested it at 6% simple interest. At the end of the year, the total amount of her original principal and the interest was $12,720. How much did she originally invest?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the original principal

She invested $12,000
check:
The interest must have been

OK
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