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

  • question_answer
    A man completes \[\frac{5}{8}\] of a job in 20 days. At this rate, how many more days will it take him to finish the job?

    A)  12                              

    B)  16           

    C)  17                  

    D)  18

    Correct Answer: A

    Solution :

    Work done\[=\frac{5}{8}\]. Balance work\[=\left( 1-\frac{5}{8} \right)=\frac{3}{8}\] Less work, less days Let the required number of days be\[x\]. Then, \[\frac{5}{8}:\frac{3}{8}::20:x\Leftrightarrow \frac{5}{8}x=\frac{3}{8}\times 20\Rightarrow 5x=60;x=12.\]


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