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18-08-2017
Advanced Placement (AP)

contestada

After earning interest,the balance of an account is $420. The new balance is 7/6 of the original balance. How much interest did It earn

Respuesta :

18-08-2017

420x6/7 = 360 starting amount
420-360 = 60 interest
60/360 = 16.67%

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