  ## Pharmacy Math - Dilution Question

by Elmer
(Dallas, Texas)

How many mL of a 30% solution should be added to 60 mL of a 50% solution to obtain a 35% solution?

## Comments for Pharmacy Math - Dilution Question

 Jul 15, 2011 an equation for the answer by: Anonymous (x)(.30)+(60ml)(.50)=(x+60)(.35)X=180ml

 Jan 29, 2011 thanks by: Kristen Thanks Keith, the video helped me.

 Jan 05, 2011 This would be the easier way to me by: Anonymous I would do tic-tac-toe always remember your higher dose goes in the top left corner lower dose goes in the lower left corner and your middle dose is placed in the middle of the grid.50-35=1530-35=5reduce both to it's lowest termwhich 5 would be 1 and 15 would be 3then multiply your mL's which is 60ml x 3=180ml is your answer.

 Jan 04, 2011 Solution by: Keith Here's the video with how to set this one up:http://www.youtube.com/watch?v=z8FFXUKkH2w

 Jan 03, 2011 answer by: Anonymous put the answer with the solution

 Jan 03, 2011 The set-up and solution. by: Keith It's most easily solved as an Alligation setup, followed by proportions math. I'll try to stakeout some time to shoot a video or write a solution page for it.

 Jan 03, 2011 I saw this one too! by: Anonymous Saw this problem on the facebook site also and I still don't understand how to set up this one. Is it an alligation or dilution?Thank you!