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

  • question_answer
    20 boys and 32 girls form a group for some social cause work. During their membership drive same number of boys and girls joined the group. How many members the group have had, if the ratio between boys and girls is 3 : 4 respectively?

    A)  48

    B)  84

    C)  92

    D)  108

    Correct Answer: B

    Solution :

    Suppose the number of addition of boys and girls is x. So, by question \[\frac{20+x}{32+x}=\frac{3}{4}\] \[\Rightarrow \]   \[(4x-3x)=(32\times 3-20\times 4)\] \[\Rightarrow \]               \[x=96-80=16\] So, the total numbers at present \[=36+48=84\]


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