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Phổ biến Word Problems >

7800 dollars is placed in an account with an annual interest rate of 5%. To the nearest tenth of a year, how long will it take for the account value to reach 13200 dollars?

Lời Giải

7800 d o ll a rs i s pl a ce d in an a cco u n t w i t h an ann u a l in t eres t r a t e o f 5%. T o t h e n e a res t t e n t h o f a ye a r, h o w l o n g w i ll i t t ak e f or t h e a cco u n t v a l u e t o re a c h 13200 d o ll a rs ?

Lời Giải

Time : 13.85

Các bước giải pháp

Translate the problem into an equation:

13200 = 7800 (1 + 0.05 t)

Giải

t, 13200 = 7800 (1 + 0.05 t) : t = 13.85

Time : 13.85

Ví dụ phổ biến

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