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SSC Sample Paper Mock Test-7 SSC CGL Tear-II Paper-1

  • question_answer
            Given that 10% A's income =15% of B's income of C's income. If sum of their income Rs. 7800, then income is

    A)                               Rs. 3600

    B)  Rs. 3000      

    C)  Rs. 2400

    D)  Rs. 180

    Correct Answer: C

    Solution :

    10% of A = 15% of B = 20% of C \[\Rightarrow \]\[10A=15B=20C\]\[\Rightarrow \]\[\frac{10A}{60}=\frac{15B}{60}=\frac{20C}{60}\] \[\Rightarrow \]   \[\frac{A}{6}=\frac{B}{4}=\frac{C}{3}\] \[\therefore \]      A : B : C = 6 : 4 : 3 \[\therefore \]      \[6x+4x+3x=7800\] \[\Rightarrow \]   \[13x=7800x=\frac{7800}{13}=7x=600\] B's income \[=4x=4\times 600=2400\]


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