Use the base formula
I = P*r*t,
where I is the interest, P is the principal, r is the annual simple interest rate, t is the time.
From the formula,
r = = = 0.0515 = 5.15%. ANSWER
Solved.
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To see many other similar (and different) solved problems on simple interest accounts, look into the lesson
- Simple interest percentage problems
in this site.