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人気のある Word Problems >

Roxanne opened a savings account 10 years ago. The account earns 6% interest, compounded quarterly. If the current balance is 300.00, how much did she deposit initially?

解

R o x ann e o p e n e d a s a v in g s a cco u n t 10 ye a rs a g o . T h e a cco u n t e a r n s 6% in t eres t, co m p o u n d e d q u a r t er l y . I f t h e c u rre n t ba l an ce i s 300.00, h o w m u c h d i d s h e d e p os i t ini t ia ll y ?

解

Principal : 165.38

解答ステップ

Translate the problem into an equation:

300 = P (1 + \frac{0.06}{4})^{4 \cdot 10}

P

を解く

300 = P (1 + \frac{0.06}{4})^{4 \cdot 10} : P = 165.38

Principal : 165.38

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