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kirza4 [7]
3 years ago
9

Approximately how much principal would need to be placed into an account earning 3.575% interest compounded quarterly so that it

has an accumulated value of $68,000 at the end of 30 years?
a.
$23,706
b.
$23,377
c.
$52,069
d.
$58,944
Mathematics
2 answers:
Ainat [17]3 years ago
7 0

<u>Answer-</u>

<em>$23377</em><em> must be deposited to get $68000 at the end of 30 years.</em>

<u>Solution-</u>

We know that for compound interest,

A=P(1+\dfrac{r}{n})^{nt}

Where,

A = Future amount = $68,000

P = ??

r = 3.575% annual = 0.03575

n = 4 as interest is compounded quarterly

t = time in year = 30 years

Putting the values,

\Rightarrow 68000=P(1+\dfrac{0.03575}{4})^{4\times 30}

\Rightarrow 68000=P(1.0089375)^{120}

\Rightarrow P=\dfrac{68000}{(1.0089375)^{120}}

\Rightarrow P=23377.45

Therefore, $23377 must be deposited to get $68000 at the end of 30 years.



Vsevolod [243]3 years ago
3 0

Answer:

Option b- $23,377

Step-by-step explanation:

Given : An account earning 3.575% interest compounded quarterly so that it has an accumulated value of $68,000 at the end of 30 years.

To find : How much principal would need to be placed into an account?

Solution :

Using compound interest formula,

A=P(1+\dfrac{r}{n})^{nt}

Where,

A = Future amount = $68,000

P = Principal value =?

r = 3.575% annual = 0.03575

n = 4  (interest is compounded quarterly)

t = time in year = 30 years

Putting the values,

68000=P(1+\dfrac{0.03575}{4})^{4\times 30}

\Rightarrow 68000=P(1.0089375)^{120}

\Rightarrow P=\dfrac{68000}{(1.0089375)^{120}}

\Rightarrow P=23377.45

Therefore, $23,377 must be deposited to get $68000 at the end of 30 years.

Hence, Option b is correct.

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1.1) B=12.42°, C=146.58°, c=15.37  

1.2) B=8°, C=124°, c=35.7  

2) In the case of SSA, when the given angle A is acute (<90°), the side "a" (opposite to the given angle "A") is less than the other given side "b" (a<b), and a > b sinA.  

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Replacing the known values:

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A = 75.59663485 → A = 75.6 square units

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