Read this article and watch the video. The article describes examples in which systems of equations can be used to solve real-world quantities. After you review, complete problems 1 to 4 and check your answers.

In this section, we'll see how consistent, inconsistent, and dependent systems might arise in applications.

Source: CK-12, https://www.ck12.org/algebra/Applications-of-Linear-Systems/lesson/Applications-of-Linear-Systems-ALG-I/