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    When 16 is subtracted from 3 times a number, the result is 8. What is the cube of the original number?
    Question

    When 16 is subtracted from 3 times a number, the result is 8. What is the cube of the original number?

    A.

    343

    B.

    512

    C.

    125

    D.

    216

    Correct option is B


    Let the original number be x. According to the problem:
    3x−16=8.
    3x = 8 + 16,
    3x = 24.
    x = 8.
    x3 = 83 = 512.

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