In an alloy of three metals, ratio of the quantity of gold, silver and platinum is 5:7:8, respectively. If total quantity of silver and platinum together is 150 kg then find the difference between the quantity of silver and gold.
Let the quantity of gold, silver and platinum be ‘5x’ kg, ‘7x’ kg and ‘8x’ kg, respectively. Total quantity of silver and platinum together = 150 kg 7x + 8x = 150 Or, x = 10 Difference between the quantity of silver and gold = {(7 – 5) × 10} = 20 kg
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