Monday, April 30, 2012

Surfing For How Many Liters Of A 10 Alcohol Solution?

William asks…How many liters of a 10% alcohol solution must be mixed with 50 liters of a 80% solution to get a 30%?How many liters of a 10% alcohol solution must be mixed with 50 liters of a 80% solution to get a 30% solution?Nancy answers:Let the no. Of litres required be x.

(10/100) * x + (80/100) * 50 = (30/100) * (x + 50)

10x + 4000 = 30 (x + 50)

10x + 4000 = 30x + 1500

20x = 2500

x = 125 litresNancy asks…How many liters of a 10% alcohol solution should be mixed with 12 liters of

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