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Answer to Question #19727 in Abstract Algebra for dollydawson

Question #19727
Find the missing value. the principal is $500, the time is 7 years, the simple interest is$140.00, i have to find the rate.
The simple interest formula is:
I = P*R*T, where
I - interest, P - principal, R - rate, T - time in years of the loan.
Then, R = I/(P*T) =140/(500*7) = 0.04
The rate is 4%

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