Answer: For the following exercises, use a system of linear equations with two variables
Chapter 7, Problem 69(choose chapter or problem)
For the following exercises, use a system of linear equations with two variables and two equations to solve. If a scientist mixed 10% saline solution with 60% saline solution to get 25 gallons of 40% saline solution, how many gallons of 10% and 60% solutions were mixed?
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