Question

    A number N undergoes a two-step adjustment: first, it is

    increased by 20%, and then it is subsequently decreased by 10% of the new value. After these adjustments, the final result is 1,080. Determine the original value of the number N before any changes were applied.
    A 950 Correct Answer Incorrect Answer
    B 1000 Correct Answer Incorrect Answer
    C 1020 Correct Answer Incorrect Answer
    D 1080 Correct Answer Incorrect Answer
    E 1100 Correct Answer Incorrect Answer

    Solution

    When there are two changes then, we can find resultant change by given method- = +8%, here positive sign shows the increasing. Let original number was 100% Then 108% = 1080 Original number = 100% = 1080/108 × 100 = 1000

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