SOLUTION: Please help me solve this word problem about mixtures: {{{ how many % alcohol should a wine maker add to 20 gallons of wine that is 12% alcohol to have 30 gallons of wine that is 1

Question 750350: Please help me solve this word problem about mixtures:
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
how many % alcohol should a wine maker add to 20 gallons of wine that is 12%
alcohol to have 30 gallons of wine that is 14% alcohol?
:
We know that the amt to be added has to be 10 gal to get 30 gallons
Let x = the decimal equiv of the percent required
:
10x + .12(20) = .14(30)
10x + 2.4 = 4.2
10x = 4.2 - 2.4
10x = 1.8
x = 1.8/10
x = .18 * 100 = 18% required
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