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OpenStudy (anonymous):
a lab tech needs to make a 72-liter batch of a 20% acid solution. How can the tech combine a batch of an acid that is pure with another that is 10% to get the desired concentration?
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OpenStudy (lochana):
hmm. it's confusing. can you stay a moment
OpenStudy (lochana):
@tinaboutin are you there?
OpenStudy (anonymous):
hello, I am still here.
OpenStudy (trantom):
100x + 10y = 20 x + y =72
OpenStudy (lochana):
yes. answers are 14.4liter from pure and 57.6 from 10% acid
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OpenStudy (anonymous):
Thank you so very much Lochana. I have been stumped on this one for a while now..Tina
OpenStudy (lochana):
@tinaboutin bye
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