Question 625357
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Simple interest is calculated  on  the original amount only whereas compound interest is calculated on the original plus the interest for the previous year/s. 
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Knowing that, we only get the difference between the initial/principal and the final value. That is $7,000. You were able to earn that in 20 years, so each year you gain 7000 / 20 = <i>$350</i>. 
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Rate = Interest / Principal ===> 350 / 5000 = <B>7%</B>
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You earned 7% each year on the account.

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