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    Question

    A girl found the answer for the question “subtract

    the sum 1/2 and 1/8 from unity and express the answer in decimals” as 1.5. The percentage of error in her answer was?
    A 300% Correct Answer Incorrect Answer
    B 266.66% Correct Answer Incorrect Answer
    C 150% Correct Answer Incorrect Answer
    D 400% Correct Answer Incorrect Answer

    Solution

    Correct answer = 1 - (1/2+1/8) = 1 - ((4+1)/8) ⇒ 1 - 5/8 = 3/8 = 0.375 Difference in answer = 1.5 - 0.375 = 1.125 Required percentage = 1.125/0.375 × 100 = 300 %

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