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Popular Word Problems >

2 years ago, Owen won some money in the lottery and put it in a bank account that earns 15% interest compounded annually. If Owen currently has 400.00 in the bank account, how much interest has he earned?

Solution

2 ye a rs a g o, Ow e n w o n so m e m o n ey in t h e l o tt ery an d p u t i t in a bank a cco u n t t ha t e a r n s 15% in t eres t co m p o u n d e d ann u a ll y . I f Ow e n c u rre n tl y ha s 400.00 in t h e bank a cco u n t, h o w m u c h in t eres t ha s h e e a r n e d ?

Solution

Interest : 97.54

Solution steps

Translate the problem into an equation:

400 = 302.45746 \dots + I

Solve for

I, 400 = 302.45746 \dots + I : I = 97.54

Interest : 97.54

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