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      Question

      If a shopkeeper earns a profit on selling 30 metres of

      fabric equal to the cost price of 6 metres of the fabric, determine the profit percentage.
      A 18% Correct Answer Incorrect Answer
      B 20% Correct Answer Incorrect Answer
      C 25% Correct Answer Incorrect Answer
      D 32% Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the selling price of 1 metre cloth be Rs. β€˜SP’ and the cost price of 1 metre cloth be Rs. β€˜CP’.

      ATQ,

      30 Γ— SP – 30 Γ— CP = 6 Γ— CP

      Or, 30 Γ— SP = 36 Γ— CP

      Or, SP/CP = 36/30 = 6/5

      Required profit percentage = {(6 – 5)/5} Γ— 100 = 20%

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