Wednesday, July 4, 2012

Surfing For How Many Liters Of A 10 Alcohol Solution?

Daniel asks…algebra. please help me? thanks.?1) One antifreeze solution is 10% alcohol. Another antifreeze solution is 18% alcohol. How many liters of each antifreeze solution should be combined to create 20 liters of antifreeze solution that is 15% alcohol?
A) 5 L of 10% solution; 15 L of 18% solution
B) 7.5 L of 10% solution; 12.5 L of 18% solution
C) 8.5 L of 10% solution; 11.5 L of 18% solution
D) 10 L of 10% solution; 10 L of 18% solutionNancy answers:Let x = amount of 10% and y = amount

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