SOLUTION: You need a 20% alcohol solution. On hand, you have a 180 mL of a 5% alcohol mixture. You also have 65% alcohol mixture. How much of the 65% mixture will you need to add to obtain t

SOLUTION: You need a 20% alcohol solution. On hand, you have a 180 mL of a 5% alcohol mixture. You also have 65% alcohol mixture. How much of the 65% mixture will you need to add to obtain t

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Question 1033212: You need a 20% alcohol solution. On hand, you have a 180 mL of a 5% alcohol mixture. You also have 65% alcohol mixture. How much of the 65% mixture will you need to add to obtain the desired solution?
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
Let x= amount of 65% mixture needed. Then:
180(.05)+ x(.65)=.2(180+x)
9+.65x=36+.2x
.45x=27
x=60 ml of 65% mixture needed to make 240 ml of %20 solution!!!!!!
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