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人気のある Word Problems >

3200 dollars is placed in an account with an annual interest rate of 8%. To the nearest tenth of a year, how long will it take for the account value to reach 9000 dollars?

解

3200 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 8%. 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 9000 d o ll a rs ?

解

Time : 22.66

解答ステップ

Translate the problem into an equation:

9000 = 3200 (1 + 0.08 t)

t

を解く

9000 = 3200 (1 + 0.08 t) : t = 22.66

Time : 22.66

人気の例

Natalie invested 1,200 in an account paying an interest rate of 6.4% compounded continuously. Assuming no deposits or withdrawals are made, how much money, to the nearest dollar, would be in the account after 17 years?if the perimeter of the square is 48cm then find the 面積 of the square A number increased by 11 is 2 times the sum of the number and 1.To pay for new machinery in 7 years, a company owner invests 20,000 at 7.5% compounded quarterly. How much money will be available in 7 years? Round your answer to the nearest cent.twice the 差 of a number and 9 is two