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Banking Sample Paper Bank of Baroda (PO) Sample Test Paper-1

  • question_answer
    If 2 kg of metal, of which \[\frac{1}{3}\] is zinc and the rest is copper, be mixed with 3 kg of metal, of which \[\frac{1}{4}\]is zinc and the rest is copper, then what will be the ratio of zinc to copper in the mixture? 

    A)  13:42              

    B)  17:43  

    C)  19:43  

    D)         15:42

    E)  16:43                   

    Correct Answer: B

    Solution :

    In 2 kg of metal Zinc             Copper \[2\times \frac{1}{3}\]           \[2\times \frac{2}{3}\] \[\frac{2}{3}\]               \[\frac{4}{3}\] In 3 kg of metal Zinc           Copper \[3\times \frac{1}{4}\]                \[3\times \frac{3}{4}\] \[\frac{3}{4}\]               \[\frac{9}{4}\] Now, new ratio \[=\frac{\frac{2}{3}+\frac{3}{4}}{\frac{4}{3}+\frac{9}{4}}\] \[=\frac{8+9}{12}\times \frac{12}{16+27}=\frac{17}{43}=17:43\]


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