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Help with Amount = RateTotal

  1. Mar 27, 2010 #1
    SOLVED *Help with Amount = RateTotal* SOLVED

    SOLVED

    1. The problem statement, all variables and given/known data

    A pharmacist is mixing an 2.3% saline solution and an 9.6% saline solution to get 2.6 litres of a 5% solution. How much of the 2.3% solution is needed?



    2. Relevant equations
    Amount = Rate x Total


    3. The attempt at a solution

    I have no idea how to set this up.

    Would I do something like .023x + .096y = .05(2.6) then solve for x and y?



    I am not sure where to go with this. Any help with be greatly appreciated.
     
    Last edited: Mar 27, 2010
  2. jcsd
  3. Mar 27, 2010 #2

    HallsofIvy

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    Staff Emeritus
    Science Advisor

    Yes, together with the equation x+ y= 2.6.
     
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