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March 26, 2017

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An alloy is made by using copper and zinc in the ratio of 17:3 how much zinc is used to make 4kg of the alloy?

  • maths - ,

    zinc = 3x kg,
    copper = 17x kg,

    3x + 17x = 4.0 kg,
    20x = 4,
    x = 4 / 20 = 0.20,

    3x = 3 * 0.20 = 0.6 kg = zinc required.

  • maths - ,

    16

  • Maths - ,

    let weight of zinc and copper=3x and 17x respectively.
    Then,
    17x + 3x=4000grams
    20x=4000grams
    x=(4000/20)grams
    x=200grams

    therefore, zinc required=(200*3)grams=600 grams=0.6 kg.

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