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    Question

    A student mistakenly multiplied a number by 5.6 instead of

    0.56. His answer exceeded the correct one by 2800. What was the original number? (Calculate approximate value)
    A 320 Correct Answer Incorrect Answer
    B 250 Correct Answer Incorrect Answer
    C 290 Correct Answer Incorrect Answer
    D 555 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let original number be ‘x’

    So, 5.6x – 0.56x = 2800

    Or, 5.04x = 2800

    Or, x = 555.56 or approx. 555

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