Problema Solution
A dehydrated patient needs a 6.8% Saline IV solution. Unfortunately, the hospital only has 2% and 8% 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 A BE AMOUNT OF 2% AND B BE 8% SALINE SOULTION
A+B=2----------------1
ALSO
2A+8B= 6.8
A+4B=3.4-----------------2
SUBTRACT 1 AND 2 WE GETS
3B= 1.4
B=0.466 LITERS
A=1.534 LITERS