SOLUTION: How many ml of a 20% solution should be added to 50 ml of a 40% solution to obtain a 25% solution?

Question 1101602: How many ml of a 20% solution should be added to 50 ml of a 40% solution to obtain a 25% solution?

Found 2 solutions by Alan3354, Boreal:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Been done 100's, maybe 1000's of times on this site.
Look it up.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
x ml
0.20x+0.40(50)=0.25(50+x) The percentage*volume of each added together equals the total volume*total percentage
0.20x+20=12.5+0.25x
7.5=0.05x
x=150 ml of 20%
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