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Nezavi [6.7K]
3 years ago
8

$16,281$⁢16,281 is invested, part at 15%15% and the rest at 13%13%. If the interest earned from the amount invested at 15%15% ex

ceeds the interest earned from the amount invested at 13%13% by $1995.27$⁢1995.27, how much is invested at each rate? (Round to two decimal places if necessary.)
Business
1 answer:
aleksandr82 [10.1K]3 years ago
5 0

Answer:

Ans. The amount invested at 13% was $1,595.97 and $14,685.03 were invested at 15%

Explanation:

Hi, you can solve this by using 2 equations, so let X be the portion of the money invested at 15% and Y be the amount invested at 13%. So the equation for the whole amount is:

X+Y=16,281

Now, the problem says that the money that you earn by investing at 15% exceeds the money received as interest in your investment of 13% by $1,995.27, this leads us to the second equation.

0.15X=0.13Y+1995.27

Now, to make it a little more friendly, we just have to go ahead and divide everything by 0.15, so we get.

X=0.8667Y+13,301.8

Now, in our first equation, we substitute X fo 0.8867(Y)+13,301.8 and we will see this.

0.8667Y+13,301.8+Y=16,281

Now, we solve for Y

1.8667Y=16,281-13,301.8

Y=\frac{2,979.2}{1.8667} =1,595.97

So the money invested at 13% was $1,595.97 therefore, the money invested at 15% was $16,281 - $1,595.97 = $14,685.03

And we can check this results like this. The money invested at 15% will return an amount of:

14,685.03*0.15=2,202.75

And the money invested at 13% will return

1,595.97*0.13=207.48

Substracting, we would found that the difference is:

2,202.75-207.48=1,995.27

Best of luck.

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