Write a system of equations for each problem, and then solve the system. See Example 3.A
Chapter 4, Problem 25(choose chapter or problem)
Write a system of equations for each problem, and then solve the system. See Example 3.A 40% dye solution is to be mixed witha 70% dye solution to get 120 L of a50% solution. How many liters of the40% and 70% solutions will be needed?
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