SOLUTION: One solution contains 10% alcohol while another contains 30% alcohol. How many liters of each should be mixed to give 10 L of a solution 25% alcohol? Thanks!

Question 344338: One solution contains 10% alcohol while another contains 30% alcohol. How many liters of each should be mixed to give 10 L of a solution 25% alcohol?
Thanks!
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let be the amount of 10% alcohol, the amount of 30% alcohol.
.
.
.
Total volume:
1.
.
.
.
Concentration of alcohol:

2.
.
.
.
Subtract eq. 1 from eq. 2,

L
Then from eq. 1,

L
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