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SSC Sample Paper SSC CGL - Sample Paper-5

  • question_answer
    In an alloy, the ratio of copper and zinc is 5: 2. If 1.250 kg of zinc is mixed in 17 kg 500 g of alloy, then the ratio of copper and zinc will be

    A)  2 : 1                            

    B)  2 : 3

    C)  3 : 2                            

    D)  1 : 2

    Correct Answer: A

    Solution :

    Weight of copper in 17 kg 500 g i.e., 17500 g of alloy \[=\frac{5}{7}\times 17500=12500\,g\] Weight of zinc\[=(17500-12500)\] = 5000 g 1250 g of zinc is mixed in alloy. \[\therefore \] Total weight of zinc             \[=1250+5000=6250\text{ }g\] \[\therefore \] Required ratio \[=12500:6250=2:1\]


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