Mathematics, 08.01.2020 04:31 mmaglaya1
Peggy has 500 milliliters of a60% solution of copper sulfate. how many milliliters of a 30% solution of copper sulfate should be added to obtain a a 50% solution?
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Peggy has 500 milliliters of a60% solution of copper sulfate. how many milliliters of a 30% solution...
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