SOLUTION: If Kachina Caron invested 1800 dollars in a simple interest account and earned $81 in 9 months, what is the annual interest rate?

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Question 1018303: If Kachina Caron invested 1800 dollars in a simple interest account and earned $81 in 9 months, what is the annual interest rate?
Answer by t0hierry(194) About Me  (Show Source):
You can put this solution on YOUR website!
81 in 9 months is 27$ in 3 months so 81 + 27 = 108 = 108/1800 = 6% per year