Question 612778
how much 60% antifreeze solution must be mixed with a 40% antifreeze solution to produce 25 gallons of a 48% disinfectant solution? Round your final answer to the nearest gallon.
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s = 60%
f = 40%
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s + f = 25
60s + 40f = 100*25
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I don't know how it becomes a disinfectant.