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      Question

      A number is first increased by 80%, then increased by 50%

      and then decreased by 50%. If the resultant number is 360, then find the original number.
      A 265 Correct Answer Incorrect Answer
      B 267 Correct Answer Incorrect Answer
      C 325 Correct Answer Incorrect Answer
      D 445 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the original number be '100x'.

      ATQ;

      100x Γ— 1.8 Γ— 1.5 Γ— 0.5 = 360

      Or, 135x = 360

      So, x = 2.67

      So, original number = 2.67 Γ— 100 = 267

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