SOLUTION: A lab technician is required to prepare 200 liters of a fungicide. The prepared solution must contain 42% fungicide. The lab technician wishes to use a solution that contains 30% f

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Question 385555: A lab technician is required to prepare 200 liters of a fungicide. The prepared solution must contain 42% fungicide. The lab technician wishes to use a solution that contains 30% fungicide with a solution that contains 50% fungicide. How much of each solution should he use.
thanks
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A lab technician is required to prepare 200 liters of a fungicide. The prepared solution must contain 42% fungicide. The lab technician wishes to use a solution that contains 30% fungicide with a solution that contains 50% fungicide. How much of each solution should he use.
Equation:
fungi + fungi = fungi
0.50x + 0.30(200-x) = 0.42*200
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Multiply thru by 100 to get:
50x + 30*200 - 30x = 42*200
20x = 12*200
x = 120 liters (amt. of 50% solution needed in the mixture)
200-x = 80 liters (amt. of 30% solution needed in the mixture)
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Cheers,
Stan H.
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