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SSC Sample Paper Mock Test-20 SSC CGL Tear-II Paper-1

  • question_answer
    The average monthly income of X and Y is Rs.  5050. The average monthly income of Y and Z is Rs. 6250 and the average monthly income of X and Z is Rs. 5200. The monthly income of X is

    A) Rs. 4050

    B)  Rs. 3500

    C)  Rs. 4000

    D)  Rs. 5000

    Correct Answer: C

    Solution :

    X + Y = Rs.\[(2\times 5050)\]= Rs. 10100 Y + Z = Rs. \[(2\times 6250)\]= Rs. 12500 Z + X = Rs. \[(2\times 5200)\]= Rs. 10400 Adding all three, \[2(X+Y+Z)\] = Rs. \[(10100+12500+10400)\] = Rs. 33000 \[\Rightarrow \]   \[X+Y+Z=\text{Rs}\text{. }16500\] \[\therefore \]      \[\text{X=}\,\,\text{(X+Y+Z)}-\text{(Y+Z)}\] = Rs. \[(16500-12500)\]= Rs. 4000


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