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      Question

      A number is initially increased by 37.5% and then

      reduced by 40%. The final value obtained after these changes is 6,270. Determine 80% of the original number.
      A 6,240 Correct Answer Incorrect Answer
      B 5,720 Correct Answer Incorrect Answer
      C 6,120 Correct Answer Incorrect Answer
      D 6,080 Correct Answer Incorrect Answer

      Solution

      Let the required number be 'N'.

      So, N X 1.375 X 0.6 = 6,270

      Or, N X 0.825 = 6,270

      Or, 'N' = (6,270/0.825) = 7,600

      Therefore, required value = 0.8 X 7,600 = 6,080

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