3 years ago, Jeanette won some money in the lottery and put it in a bank account that earns 3% interest compounded monthly. If Jeanette currently has 200.00 in the bank account, how much interest has she earned?

Solution

3 ye a rs a g o, J e an e tt e 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 3% in t eres t co m p o u n d e d m o n t h l y . I f J e an e tt e c u rre n tl y ha s 200.00 in t h e bank a cco u n t, h o w m u c h in t eres t ha s s h e e a r n e d ?

Interest : 17.19

Solution steps

Translate the problem into an equation:

200 = 182.80676 \dots + I

Solve for

I, 200 = 182.80676 \dots + I : I = 17.19

Interest : 17.19