# Math

An account earns simple interest. Find the annual interest rate.

I= \$30

P= \$250

t= 3 years

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1. 250 * 3r = 30
now solve for r, and express as a %

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posted by oobleck
2. P*r*t = I.
250 * r * 3 = 30.
750r = 30,
r = 0.04 = 4%.

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posted by henry2,

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