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Banking Sample Paper SBI Junior Associates (Main) Sample Test Paper-1

  • question_answer
    Three numbers A, B and C are in the ratio of \[1:2:3\] and their average is 600. If A is increases by 10% and B is decreased by 20% and the average increases by 5%, then C will be increase by?

    A)  250                             

    B)  150                 

    C)  200                             

    D)  160

    E)  180

    Correct Answer: E

    Solution :

    \[\because \,\,x+2x+3x=600\times 3\] \[\Rightarrow \]\[6x=1800\] \[\therefore \]\[x=300\] \[\therefore \]\[A=300,\,\,B=600\] and\[C=900\] New total \[=(600\times 3)\times \frac{105}{100}=1890\] New quantity of\[A=300\times \frac{110}{100}=330\] New quantity of\[B=600\times \frac{80}{100}=480\] Now, new quantity of C \[=1890-(330+480)=1080\] \[\therefore \]Increase in the number \[=1080900\text{ }=\text{ }180\]


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