How many gallons of 20% alcohol solution should be added to 40 gallons of a 50% alcohol solution to make a 30% solution?
+15069 How many gallons of 20% alcohol solution should be added to 40 gallons of a 50% alcohol solution to make a 30% solution?
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Wie viele Gallonen einer 20%igen Alkohollösung sollten zu 40 Gallonen einer 50%igen Alkohollösung hinzugefügt werden, um eine 30%ige Lösung herzustellen?
40gal⋅0.5+x⋅0.2=(x+40gal)⋅0.320gal+0.2x=0.3x+12gal | −0.2x−12gal8gal=0.1x | /0.1
80gal=x
80 gallons of 20% solution must be added to the 40 gallons of 50% solution.
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