SOLUTION: Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for the specified variable.

Question 279656: Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for the specified variable.

In a chemistry class, 5 liters of a 4%-saline solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!

5*.04+.1x=.06*(x+5)
x=2.5
or
y=x+5
x=y-5
5*.04+.1x=.06*y
x=2.5

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