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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-20

  • question_answer
    Given that 24 carat gold is pure gold, 18 carat gold is \[\frac{3}{4}\] gold and 20 carat gold is \[\frac{5}{6}\] gold, the ratio of the pure gold in 18 carat gold to the pure gold in 20 carat gold is:

    A)  \[3:8\]                         

    B)  \[9:10\]                       

    C)  \[15:24\]             

    D)         \[8:5\]             

    Correct Answer: B

    Solution :

    18 carat gold \[=\frac{3}{4}\] pure gold \[=\frac{3}{4}\times 24=18\] carat gold 20 carat gold \[=\frac{5}{6}\] pure gold \[=\frac{5}{6}\times 24=20\] carot gold Required ratio \[=18:20=9:10\]


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