SOLUTION: After 9 months, the simple interest earned on an investment of $1200 is $72 Find the interest rate.
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Question 888740: After 9 months, the simple interest earned on an investment of $1200 is $72 Find the interest rate.
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
72=1200r*0.75
72=900r
72/900=r
r=0.08=8%
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