SOLUTION: you have invested $3500 in the stock market and have a return of 5650 after 15 months. what simple interest rate did your investment earn? Need asap!!!

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Question 1032659: you have invested $3500 in the stock market and have a return of 5650 after 15 months. what simple interest rate did your investment earn?

Need asap!!!
Found 2 solutions by jorel555, MathTherapy:
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
3500*n=5650
n=5650/3500=1.6142857 after 15 months
12/15*1.6142857=1.29142857, or 129.142857% interest!!!!!!!

Answer by MathTherapy(10551) About Me  (Show Source):
You can put this solution on YOUR website!

you have invested $3500 in the stock market and have a return of 5650 after 15 months. what simple interest rate did your investment earn?

Need asap!!! 
Interest rate: highlight_green%28matrix%281%2C3%2C+0.491429%2C+or%2C+%2249.14%25%22%29%29