Answer
$r=\frac{\frac{A}{P}-1}{t}$
Work Step by Step
$A=P(1+rt)$
$1+rt=\frac{A}{P}$
$rt=\frac{A}{P}-1$
$r=\frac{\frac{A}{P}-1}{t}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.