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.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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