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suppose your saving account has annual compound interest. after 3 years you deposit of 1,000 becomes...

suppose your saving account has annual compound interest. after 3 years you deposit of 1,000 becomes 1,331 what is the annual interest rate for this account?

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Answer #1

ANSWER = 10%

Future value = Present value (1 + Rate)Time

Future value = $1331

Present value = $1000

Time = 3

Putting values in formula,

1331 = 1000 (1 + Rate)3

1.331 = (1 + Rate)3

(1.331)1/3 = 1 + Rate

1.1 = 1 + Rate

Rate = 0.1

Rate = 10%

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