SOLUTION: A chemist needs 3L of 60% salt solution. She has a 25% salt solution and 75% salt solution available with her. How many liters of each solution should she mix to obtain her desired

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Question 1024723: A chemist needs 3L of 60% salt solution. She has a 25% salt solution and 75% salt solution available with her. How many liters of each solution should she mix to obtain her desired solution?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) (Show Source):
You can put this solution on YOUR website!
This explains how that general question works:

Mixing two concentrations for known amount of mixture

Reason for the lesson is because they ALL work that way, so learn to solve one of them and you know how to do all of them. The general solution for this type is also shown.

Answer by MathTherapy(10552) (Show Source):
You can put this solution on YOUR website!

A chemist needs 3L of 60% salt solution. She has a 25% salt solution and 75% salt solution available with her. How many liters of each solution should she mix to obtain her desired solution?

Let amount of 25% salt solution needed, be T
Then amount of 75% solution needed = 3 - T
Equation formed:
Solve for T, the amount of 25% solution to be mixed
Subtract T from 3 to get amount of 75% solution to be mixed