Three Solutions Contain a Certain Acid

question 11

Multiple Choice

Three solutions contain a certain acid. The first contains 10% acid, the second 30%, and the third 50%. A chemist wishes to use all three solutions to obtain a 90-liter mixture containing 26% acid. If the chemist wants to use twice as much of the 50% solution as of the 30% solution, how many liters of each solution should be used?

• A)43.8 of 10% , 15.4 of 30% , 30.8 of 50%
• B)46.8 of 10% , 14.4 of 30% , 28.8 of 50%
• C)49.8 of 10% , 13.4 of 30% , 26.8 of 50%
• D)45.8 of 10% , 15.4 of 30% , 28.8 of 50%
• E)46.8 of 10% , 28.8 of 30% , 14.4 of 50%

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