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    Question

    Solution A contains 10% acid and solution B contains

    30% acid. In what ratio should solution A be mixed with Solution B to obtain a mixture with 25% acid?
    A 1 : 2 Correct Answer Incorrect Answer
    B 3 : 1 Correct Answer Incorrect Answer
    C 1 : 3 Correct Answer Incorrect Answer
    D 2 : 1 Correct Answer Incorrect Answer

    Solution

    In solution 1 acid percent=10 In solution 2 acid percent=30   In the resulting mixture acid percent=25% By applying the principle of allegations we have =(30-25)/(25-10) =5/15 =1:3

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