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Jotham needs 3 liters of a 50% alcohol solution. He has a 40% and a 70% solution available. How many liters of
the 40% and how many liters of the 70% solutions should he mix to make the 50% solution?
Liters of 40% solution =
Liters of 70% solution =
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Sagot :

x+y=70. (30x+80y)/(100x+100y)=50/100

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