in an alcohol solution of 5 liters the concentration of alcohol is 40 %. to make the alcohal 15% concentrated how much liters of water must be added.
Answers
Given : in an alcohol solution of 5 liters the concentration of alcohol is 40 %.
To Find : to make the alcohol 15% concentrated how much liters of water must be added.
Solution:
Solution = 5 liters
concentration of alcohol is 40 %.
=> Alcohol = (40/100) 5 = 2 liter
Let say x liter water is added
Then Solution = 5 + x liter
Alcohol = 2 litre
alcohol 15% concentrated
=> (15/100) (5 + x) = 2
=> 5 + x = 200/15
=> x = 200/15 - 5
=> x = 40/3 - 5
=> x =25/3
Hence 25/3 liters of water to be added
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Answer:
25/3 is the answer
Step-by-step explanation:
solution 5