Your final balance on an investment of $ 900 invested at 9% was $ 1,224.00. For what period of time did you invest?
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Amount= Principal + Interest
$1224= $900 + interest
So, interest= 1224-900
=$324
Interest= principal x time x rate/ 100
324= 900 x time x 9/100
324= 81 x time
Time = 324/81
= 4 years
$1224= $900 + interest
So, interest= 1224-900
=$324
Interest= principal x time x rate/ 100
324= 900 x time x 9/100
324= 81 x time
Time = 324/81
= 4 years
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