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    Question

     If the sum of two numbers is 33 and their difference

    is 15, the smaller number is
    A 9 Correct Answer Incorrect Answer
    B 12 Correct Answer Incorrect Answer
    C 15 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer

    Solution

    Let the numbers x and y.

    x+y=33 …(1)

    x-y=15 …(2)

    x=(33+15)/2=24

    y=(33-15)/2=18/2=9.

    the smallest number is 9.

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