document.write( "Question 474334: A dehydrated patient needs 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? \n" ); document.write( "
Algebra.Com's Answer #325324 by stanbon(75887)\"\" \"About 
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A dehydrated patient needs 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?
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\n" ); document.write( "Equation:
\n" ); document.write( "saline + saline = saline
\n" ); document.write( "0.05x + 0.07(2-x) = 0.061*2
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\n" ); document.write( "Multiply thru by 1000 to get:
\n" ); document.write( "50x + 70*2 -70x = 61*2
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\n" ); document.write( "-20x = -9*2
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\n" ); document.write( "x = 0.9 liters (amt of 5% solution needed)
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\n" ); document.write( "2-x = 2-0.9 = 1.1 liters (amt. of 7% solution needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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