In a moment, you will be providing a system of three linear equations. A private investment club has $400,000 earmarked for investment in stocks. To arrive at an acceptable overall level of risk, the stocks that management is considering have been classified into three categories: high-risk, medium-risk, and low-risk. Management estimates that high-risk stocks will have a rate of return of 15%; medium-risk stocks, 10%; and low-risk stocks, 6%. The members have decided that the investment in low-risk stocks should be equal to the sum of the investments in the stocks of the other two categories. Determine how much the club should invest in each type of stock if the investment goal is to have a return of $40,000 per year on the total investment. (Assume that all the money available for investment is invested.) 1. Using x, y, and z, define your variables: x is ..., y is ..., z is ... 2. Provide the system of three linear equations: 3. Provide the Augmented Matrix:

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.4: Applications
Problem 40EQ
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A. In a moment, you will be providing a system of three linear equations.
A private investment club has $400,000 earmarked for investment in stocks. To arrive at an acceptable
overall level of risk, the stocks that management is considering have been classified into three
categories: high-risk, medium-risk, and low-risk. Management estimates that high-risk stocks will have a
rate of return of 15%; medium-risk stocks, 10%; and low-risk stocks, 6%. The members have decided
that the investment in low-risk stocks should be equal to the sum of the investments in the stocks of the
other two categories. Determine how much the club should invest in each type of stock if the investment
goal is to have a return of $40,000 per year on the total investment. (Assume that all the money
available for investment is invested.)

1. Using x, y, and z, define your variables: x is ..., y is ..., z is ...

2. Provide the system of three linear equations:

3. Provide the Augmented Matrix:

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