SOLUTION: An investment pays simple interest, and quadruples in 12 years. What is the interest rate?

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Question 856827: An investment pays simple interest, and quadruples in 12 years. What is the interest rate?

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Let Principal be x
4x in 12 years so interest is 3x
SI = P * N * R
3x= x*12*R
3/12 = R
1/4 = R
25%