Problema Solution
A dehydrated patient needs aa 7.9% saline IV. but the hospital only has bags of 3% and 10% saline solutions How many of these solutions should be mixed together to yield 3 liters of the desired concentration
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A dehydrated patient needs aa 7.9% saline IV. but the hospital only has bags of 3% and 10% saline solutions How many of these solutions should be mixed together to yield 3 liters of the desired concentration
Let x, y be the lts of 3%, 10% solution .
x+y=3.
0.03x+0.1y=0.079*3
003x+0.1y=0.237.
0.03x+0.1(3-x)=0.237.
0.03x+0.3-0.1x=0.237.
0.07x=0.063.
x=0.9 lts.
y=3-0.9
=2.1 lts.