1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Help with Amount = RateTotal

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


    User Avatar
    Science Advisor

    Yes, together with the equation x+ y= 2.6.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook