Question 792076
One website recommends a 6% chlorine bleach-water solution to remove mildew. A chemical lab has 3% and 15% solutions in stock. How many gallons of each should be mixed to obtain 100 gallons of mildew spray?
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Equation:
chlorine + chlorine = chlorine
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0.03x + 0.15(100-x) = 0.06*100
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3x + 15*100 - 15x = 6*100
-12x = -9*100
x = (3/4)100
x = 75 gallons (amt of 3% solution needed)
100-x = 25 gallons (amt of 15% solution needed)
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Cheers,
Stan H.
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