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](https://tex.z-dn.net/?f=X%2BY%3D16%2C281)
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](https://tex.z-dn.net/?f=0.15X%3D0.13Y%2B1995.27)
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](https://tex.z-dn.net/?f=X%3D0.8667Y%2B13%2C301.8)
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](https://tex.z-dn.net/?f=0.8667Y%2B13%2C301.8%2BY%3D16%2C281)
Now, we solve for Y
![1.8667Y=16,281-13,301.8](https://tex.z-dn.net/?f=1.8667Y%3D16%2C281-13%2C301.8)
![Y=\frac{2,979.2}{1.8667} =1,595.97](https://tex.z-dn.net/?f=Y%3D%5Cfrac%7B2%2C979.2%7D%7B1.8667%7D%20%3D1%2C595.97)
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](https://tex.z-dn.net/?f=14%2C685.03%2A0.15%3D2%2C202.75)
And the money invested at 13% will return
![1,595.97*0.13=207.48](https://tex.z-dn.net/?f=1%2C595.97%2A0.13%3D207.48)
Substracting, we would found that the difference is:
![2,202.75-207.48=1,995.27](https://tex.z-dn.net/?f=2%2C202.75-207.48%3D1%2C995.27)
Best of luck.