January 8, 2019
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### A 5 solution of a drug is to be mixed with some 15 solution and some 10 solution to get 20 ml

A 5% solution of a drug is to be mixed with some 15% solution

and some 10% solution to get 20 ml of 8% solution. The amount of

the 5% solution used must be 2 ml more than the sum of the other

two solutions. How many milliliters of each solution should be

used?