Homework Help: pre-algebra

Posted by Elly on Wednesday, November 2, 2011 at 9:44pm.

After earning interest the balance of an account is $420. The new balance is 7/6 of the orginial balance. How much interest was earned?

pre-algebra - Reiny, Wednesday, November 2, 2011 at 10:21pm
(7/6)x = 420
(6/7)(7/6)x = (6/7)(420)
x = 360

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