SOLUTION: I have 10 liters of a 40% water and 60% ethanol mixture. How much of an unlimited supply of 90% water and 10% ethanol mixture should i add to this mixture in order to dilute it to

Question 891327: I have 10 liters of a 40% water and 60% ethanol mixture. How much of an unlimited supply of 90% water and 10% ethanol mixture should i add to this mixture in order to dilute it to a concentration of 25% ethanol?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = liters of 10% ethanol mixture to be added
liters of ethanol in 60% mixture

You should add 23 and 1/3 liters of 10% ethanol mixture
check:

OK
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