6 years ago, Adriana won some money in the lottery and put it in a bank account that earns 10% interest compounded annually. If Adriana currently has 400.00 in the bank account, how much interest has she earned?

Solution

Solution

Interest : 174.21

Solution steps

Translate the problem into an equation:

400 = 225.78957 \dots + I

Solve for

I, 400 = 225.78957 \dots + I : I = 174.21

Interest : 174.21

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