Latest exam Aptitude Question SOLUTION: In chemisry class, you start with 50ml of a 60% solution of copper sulfate. You will add to that a 25% solution. you need to end with 40% solution. How many of the 25% solution do

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In chemisry class, you start with 50ml of a 60% solution of copper sulfate. You will add to that a 25% solution. you need to end with 40% solution. How many of the 25% solution do

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