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    • Question

      In an alloy of three metals, ratio of the quantity of

      gold, silver and platinum is 5:11:7, respectively. If total quantity of silver and platinum together is 360 kg then find the difference between the quantity of silver and gold.
      A 120 kg Correct Answer Incorrect Answer
      B 100 kg Correct Answer Incorrect Answer
      C 110 kg Correct Answer Incorrect Answer
      D 90 kg Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the quantity of gold, silver and platinum be ‘5x’ kg, ‘11x’ kg and ‘7x’ kg, respectively. Total quantity of silver and platinum together = 360 kg 11x + 7x = 360 Or, x = 20 Difference between the quantity of silver and gold = {(11 – 5) × 20} = 120 kg

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