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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 β€˜x’

      So, 5.6x – 0.56x = 2800

      Or, 5.04x = 2800

      Or, x = 555.56 or approx. 555

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