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SSC Sample Paper SSC (Group-C) Sample Test Paper-5

  • question_answer
    In a particular type of fertilizer, the ratio of two chemicals R and T is 2:5. In 21 kg of this fertilizer. if 3 kg of R is added, the ratio of R and T in the new fertilizer will be-

    A)  \[1:1\]                

    B)  \[2:3\]

    C)  \[3:5\]                 

    D)  \[4:5\]

    Correct Answer: C

    Solution :

     Let the amount of R and T are 2x and 5x respectively. By question, \[\therefore \] \[2x+5x=21\] \[\Rightarrow \] \[7x=21\]  \[\therefore \]  \[x=3\] \[\therefore \]  amount of \[R=2x=2\times 3=6\text{ }kg.\] amount of  \[T=5x=5\times 3=15\text{ }kg.\] Now, 3kg more R is mixed in mixture. \[\therefore \]  Ratio of R and \[T=\frac{(6+3)\,kg}{15\,kg}\] \[=\frac{9}{15}=\frac{3}{5}=3:5\]


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