SOLUTION: A pharmacist is to prepare 15 milliliters of special eye drops for a glaucoma patient. The eye-drop solution must have a 7% active ingredient, but the pharmacist only has 10% solut
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Question 897695: A pharmacist is to prepare 15 milliliters of special eye drops for a glaucoma patient. The eye-drop solution must have a 7% active ingredient, but the pharmacist only has 10% solution and 1% solution in stock. How much of each type of solution should be used to fill the prescription? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A pharmacist is to prepare 15 milliliters of special eye drops for a glaucoma patient. The eye-drop solution must have a 7% active ingredient, but the pharmacist only has 10% solution and 1% solution in stock. How much of each type of solution should be used to fill the prescription?
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Equation:
active + active = active
0.10x + 0.01(15-x) = 0.07*15
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10x + 15 - x = 7*15
9x = 6*15
x = 10 ml (amt. of 10% solution needed)
15-x = 5 ml (amt. o 1% solution needed)
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Cheers,
Stan H.
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