SOLUTION: If money is invested for a short period of time, simple interest is paid using the following formula. I = Prt P represents the money invested, or principal amount, r is the si

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Question 560816: If money is invested for a short period of time, simple interest is paid using the following formula.
I = Prt
P represents the money invested, or principal amount, r is the simple interest rate, and t represents the time, in years, the money is invested.
Given P = $1,000, t = 9 years, and I = $270, what is the simple interest rate?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I = Prt

270 = 1000*r*9

270 = 1000*9r

270 = 9000r

270/9000 = r

0.03 = r

r = 0.03

So the simple interest rate is 3%
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