SOLUTION: a pharmacist mixed some 10% saline solution with some 15% saline solution to obtain 100mL of a 12% saline solution. How much of the 10% saline solution did the pharmacist use in th
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Question 298146: a pharmacist mixed some 10% saline solution with some 15% saline solution to obtain 100mL of a 12% saline solution. How much of the 10% saline solution did the pharmacist use in the mixture Answer by Deina(147) (Show Source):
You can put this solution on YOUR website! 10x + 15(100-x) = 12(100)
10x + 1500 - 15x = 1200
-5x + 300 = 0
Add 5x to each side:
300 = 5x
divide both sides by 5 so 60 = x
