SOLUTION: One liter of 10% alcohol is mixed with 30% of alcohol. What is the percentage of alcohol in the resulting mixture?

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Question 940081: One liter of 10% alcohol is mixed with 30% of alcohol. What is the percentage of alcohol in the resulting mixture?
Answer by krutarthas(22) About Me  (Show Source):
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One liter of 10% alcohol is mixed with 30% of alcohol
1 liter = 1000 mililiter
one liter solution contain 10% alcohol
that means alchol amount of 1st solution =10% of 1000 mililiter= 100 ml
another liter solution contain 30% alcohol
that means alchol amount of 2nd solution =30% of 1000 mililiter= 300 ml
if we mixed both the solution
then 02 liter soluton contain = 100 ml + 300 ml = 400 ml alcohol
percentage of 400 ml alcohol in 02 liter solution is = 400/2000×100=20%
then the percentage of alcohol in the resulting mixture 20%
answer
krutartha