6th Class Mathematics Ratio and Proportion Question Bank Ratio, Proportion & Unitary Method

  • question_answer
    If 30% of \[A=0.25\] of \[B=\frac{1}{5}\]of C, then find\[A:B:C=\]?

    A) \[12:15:10\]                 

    B)  \[10:12:15\]

    C) \[10:15:12\]                 

    D)  \[15:12:10\]

    Correct Answer: B

    Solution :

    \[\frac{30A}{100}=\frac{25B}{100}=\frac{20C}{100}\] \[30A=25B=20C\] \[\frac{A}{B}=\frac{25}{30}=\frac{5}{6},\,\,\frac{B}{C}=\frac{20}{25}=\frac{4}{5}\] \[A:B=5:6,\,\,B:C=4:5\] \[A:B:C=10:12:15\]


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