SOLUTION: Theophylline, an asthma medicine, is to be prepared from an elixir with a drug concentration of 5 mg/mL and a cherry-flavored syrup that is to be added to hide the taste of the dru

Question 837775: Theophylline, an asthma medicine, is to be prepared from an elixir with a drug concentration of 5 mg/mL and a cherry-flavored syrup that is to be added to hide the taste of the drug. How much of each must be used to prepare 100 milliliters of solution with a drug concentration of 3 mg/mL? How many mL of the elixir? How many mL of the cherry-flavored syrup?

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ml of elixir needed
Let = ml of syrup needed
= mg of drug in ml of elixir
----------------------------
(1) ml
(2)
-----------------------
(2)
(2) ml
and
(1)
(1)
(1)
60 ml of elixir is needed
40 ml of syrup is needed
check:
The mg of drug in the elixir is mg
The mg/ml concentration of the drug is:
mg/ml
OK

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