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Ymorist [56]
3 years ago
14

Find the annual percentage yield (APY) in the following situation. A bank offers an APR of 4.8% compounded daily. The annual per

centage yield is %. (Do not round until the final answer. Then round to two decimal places as needed.) Enter your answer in the answer box O Type here to search hp
Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
7 0

Answer:

4.92%

Step-by-step explanation:

First of all, recall that if you increase a number C in x%, then you will have C+\frac{x}{100}C=C(1+\frac{x}{100})

So <em>increasing a number in x% is equivalent to multiply it by (1+x/100) </em>

Now, suppose you have deposited $C where C is any amount > 0

If the bank offers an APR of 4.8% compounded daily, it means that your money increases \frac{4.8}{365}\%=\frac{0.048}{365} daily.

So, after 365 days you will have

C multiplied by (1+0.048/365) 356 times, that is

(1) C(1+\frac{0.048}{365})^{365}=C(\frac{365.048}{365})^{365}

Now, you want to find a value x, such that C increased in x% equals the amount in (1).That would be the percentage your money increased in one year (APY)

C(\frac{365.048}{365})^{365}=C(1+\frac{x}{100})\Rightarrow x=100[(\frac{365.048}{365})^{365}-1]

Computing this amount, we get

x = 4.92 rounded to the nearest hundreth.

And the bank is offering an APY of 4.92%

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