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2 years ago

8

Vanessa deposited money into a bank account that earned 1.25% simple interest each year. After 12 year, she had earned $5.00 in

interest on the account. No other money was deposited into or withdrawn from the account.
How much was her initial deposit?

1 answer:

svetlana [45]2 years ago

6 0

Answer: 800$ is the answer.

multiply to by both sides, remove 1/2.

Have a blessed day.

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$\log(P)=\log(P_0(1+r)^x)\\\log P=\log P_0+x\log (1+r)\\x\log (1+r)=\log P-\log P_0\\x\log(1+r)=\log(\frac{P}{P_0})\\x=\frac{\log(\frac{P}{P_0})}{\log(1+r)}$

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