The simple interest earned by a certain amount of money varies jointly as the rate of interest and the time (in years) that the money is invested. If the money is invested at 14% for 2 years, $84 is earned. How much is earned if the money is invested at 15% for 4 years? $__________

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The Answer of The simple interest earned by a certain amount of money varies jointly as the rate of interest and the time (in years) that the money is invested. If the money is invested at 14% for 2 years, $84 is earned. How much is earned if the money is invested at 15% for 4 years? $__________

The Simple Interest Earned by a Certain Amount of Money