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SSC Sample Paper Mock Test-3 SSC CGL Tear-II Paper-1

  • question_answer
    A and B have monthly incomes in the ratio 5 : 6 and monthly expenditures in the ratio 3 : 4. If they save Rs. 1800 and Rs. 1600 respectively, find the monthly income of B.

    A)  Rs. 3400                      

    B)  Rs. 2700

    C)  Rs. 1720                      

    D)  Rs. 7200

    Correct Answer: D

    Solution :

    Given, \[\frac{\text{Monthly}\,\,\text{income}\,\,\text{of}\,\,\text{A}}{\text{Monthly}\,\,\text{income}\,\,\text{of}\,\,\text{B}}=\frac{5}{6}\] \[\therefore \]Monthly income of A = 5x and that of B = 6x         (x is a constant) According to the question, \[\frac{5x-1800}{6x-1600}=\frac{3}{4}\]             \[\Rightarrow \]   \[20x-7200=18x-4800\]             \[\Rightarrow \]               \[2x=2400\]             \[\therefore \]                  \[x=1200\] \[\therefore \]Monthly income of B \[=1200\times 6\]=Rs. 7200


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