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인기 있는 Word Problems >

Find the time required for an investment of 5000 dollars to grow to 7200 dollars at an interest rate of 8.8 percent per year, compounded monthly.

해법

F in d t h e t im e re q u i re d f or an in v es t m e n t o f 5000 d o ll a rs t o g ro w t o 7200 d o ll a rs a t an in t eres t r a t e o f 8.8 p erce n t p er ye a r, co m p o u n d e d m o n t h l y .

해법

Time : 4.16

솔루션 단계

Translate the problem into an equation:

7200 = 5000 (1 + \frac{0.088}{12})^{12 t}

t

해결 대상

, 7200 = 5000 (1 + \frac{0.088}{12})^{12 t} : t = 4.16

Time : 4.16

인기 있는 예

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