Diluting Alcohol to Percentage

We want to prepare 200 g of 64% alcohol. We have enough 80% alcohol to dilute with water. How much 80% of alcohol and water will we need?

Final Answer:

a =  160 g
b =  40 g

Step-by-step explanation:

r1=80%=10080=54=0.8 r2=64%=10064=2516=0.64  a+b = 200 r1 a = r2 (a+b) r1 a = r2 200  a=r1r2 200=0.80.64 200=160 g
b=200a=200160=40 g



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