We continue to study system of linear equations, with the focus on the word problems involving systems of linear equations.

Such work problem usually can be modeled with two variables x and y, and the given conditions should allow you to come up with two equations using x and y. Then you solve the equations to come up with the solution. Be careful to check if the solution makes sense for the real life.

We look at several challenge problems where by transformation, we can solve them by systems of linear equations.

Homework:

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