SOLUTION: pharmacy tech student need a answer to a dilution problem. A 20% solution has been diluted to 400 ml and is now a 5% solution.What was the beginning volume of the 20% solution.

SOLUTION: pharmacy tech student need a answer to a dilution problem. A 20% solution has been diluted to 400 ml and is now a 5% solution.What was the beginning volume of the 20% solution.

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Question 474312: pharmacy tech student need a answer to a dilution problem. A 20% solution has been diluted to 400 ml and is now a 5% solution.What was the beginning volume of the 20% solution.
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
400(.05)=n(.2)
20=.2n
n=20/.2=100ml was the beginning volume of the solution..
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