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Katena32 [7]
3 years ago
8

6,000 dollars is invested in two different accounts earning 3% and 5% interest. At the end of one year, the two accounts earned

$220 in interest. How much money was invested at 5%? $2,000 $3,000 $4,000
Mathematics
1 answer:
kap26 [50]3 years ago
8 0

Answer:

$2000

Step-by-step explanation:

6,000 dollars is invested in two different accounts earning 3% and 5% interest.

Let x be the amount invested in account earning 3% interest

So, 6000-x is the amount invested in account earning 5% interest

S.I. =\frac{P\times R\times T}{100}

So, Simple interest for account earning 3% interest

S.I. =\frac{x \times 3 \times 1}{100}

S.I. =0.03x

Simple interest for account earning 5% interest

S.I. =\frac{(6000-x) \times 5 \times 1}{100}

S.I. =0.05(6000-x)

S.I. =300-0.05x

Since we are given that the two accounts earned $220 in interest

So, 0.03x+300-0.05x=220

−0.02x+300=220

80=0.02x

\frac{80}{0.02}=x

4000=x

So, 4000 was invested at 3%

(6000-x)=6000-4000=2000 was invested at 5%

Hence 2000 was invested at 5%

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Answer:

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Step-by-step explanation:

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Find the value of x.
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Answer:

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Step-by-step explanation:

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Molodets [167]
The formula of geometric sequence is expressed in the following manner:
an = a1 * r^(n-1) where r is the ratio and n is an integer.
Substituting, to find r
358.80 = <span>14 * r^(8) 
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hence, 
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6 0
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Rzqust [24]

Answer:

a.10 years 1 / 10 x 100 10% per year

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e. 5 years 1 / 5 x 100 20% per year

f. 4 years         1 / 4 x 100 25% per year

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Step-by-step explanation:

Under straight line method of depreciation, equal amount of the depreciation is reduced throughout the useful life of the asset. Using the following formula:

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d. 40 years 1 / 40 x 100 2.5% per year

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g. 20 years 1 / 20 x 100 5% per year

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Answer:

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first set of answers are

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second set of answers are

1 28.3

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