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    Question

    A student was supposed to multiply a number by 0.84 but

    instead multiplied it by 8.4. Due to this, his result exceeded the correct result by 3360. Find the original number.
    A 320 Correct Answer Incorrect Answer
    B 250 Correct Answer Incorrect Answer
    C 290 Correct Answer Incorrect Answer
    D 444 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let original number be ‘x’

    So, 8.4x – 0.84x = 3360

    Or, 7.56x = 3360

    Or, x = 444.44 or approx. 444

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