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7th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    The ratio of two numbers is a : b. If one of them is x, then other is

    A)  \[\frac{ab}{x}\]                                 

    B)  \[\frac{b}{ax}\]

    C)  \[\frac{b}{a+b}x\]                

    D)  \[\frac{bx}{a}\]

    Correct Answer: B

    Solution :

    Let the required number be\[y\]. \[a:b::x:y\] \[a\times y=b\times x\] \[y=\frac{bx}{a}\]


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