SOLUTION: A dehydrated patient needs a 6.4% saline IV. Unfortunately, the hospital only has bags of 6% and 8% saline solutions. How many liters of each of these solutions should be mixed to

Question 354876: A dehydrated patient needs a 6.4% saline IV. Unfortunately, the hospital only has bags of 6% and 8% saline solutions. How many liters of each of these solutions should be mixed together to yield 1 liter of the desired concentration?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let be the amount of 6% solution, the amount of 8% solution.
1.
.
.
.

2.
.
.
.
Multiply eq. 1 by -3 and add to eq. 2 to eliminate .

or ml
.
.
.

liter or ml
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