SOLUTION: How many ml of a 20% solution should be added to 50 ml of a 40% solution to obtain a 25% solution?
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Question 1101602
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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
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Alan3354(69443)
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Answer by
Boreal(15235)
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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%