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Alligation Dilution Problem

Health & Medical
Tutor: None Selected Time limit: 0 Hours

Available is a 30% solution of NaCl in 30 ml vials how many milliliters is needed to add to a 1L 0.9% NaCl bag to make a 6% solution.  Assume 5% overfill in the 0.9% 1 L bag.  What will the final volume be?  Will it fit if the bag allows 25% more?

Oct 21st, 2014

Let y ml be amount  of solution added

Total =y + 1000ml

Amount 0f NaCl  to begin with =final amount after adding

 1000x 0.009 + 0.3y = 0.06(y + 1000) 

9 + 0.3y = 0.06y + 60

0.24 y     = 51 

y=51/0.24

   = 212.5 ml

Final volume in bag = 1212,5 ml, but bag can only hold 1050ml, so will not fit

But with 25% more,the bag can hold 1250 ml, so it will fit.


Nov 6th, 2014

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