SOLUTION: you have a 40 liter solution that is 90% alcohol. How many liters of water must be added to have the solution be 50% alcohol?

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Question 735040: you have a 40 liter solution that is 90% alcohol. How many liters of water must be added to have the solution be 50% alcohol?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Just an example of:

you have a v liter solution that is H% alcohol. How many liters u of water, percent alcohol 0% must be added to have the solution be T% alcohol?

%280%2Au%2BH%2Av%29%2F%28u%2Bv%29=T
Solve for u.