SOLUTION: If a man earns $420 interest in one year at 7%, what was the amount of money invested?

Question 216583: If a man earns $420 interest in one year at 7%, what was the amount of money invested?
Found 2 solutions by DRichardson, MathTherapy:
Answer by DRichardson(63) (Show Source): You can put this solution on YOUR website!
Hello There,
420 dollars invested at 7% :

420 � 0.7 = 600
600 x 0.7 = 420
He placed $ 600 dollars in his account.
Hope this helps!
Delilah Richardson
Answer by MathTherapy(10557) (Show Source): You can put this solution on YOUR website!
If a man earns $420 interest in one year at 7%, what was the amount of money invested?

Let the amount invested be A

Then we'll have: .07(A) = 420

.07A = 420

= $,

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Check
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$6,000 * .07 = $420
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