Problema Solution
A dehydrated patient needs a 6.1% saline IV. Unfortunately, the hospital only has bags of 5% and 7% saline solutions. How many liters of each of these solutions should be mixed together to yield 2 liters of the desired concentration?
Answer provided by our tutors
Let 5% =x
7% =y
Therefore, x+y = 2
5x+7y = 6.1*2 = =12.2
Solving, we get, 2y = 2.2 => y = 1.1
Therefore, x=0.9