2. Sample Papers
  3. Railways

Railways Sample Paper RRB (Group D) Sample Test Paper-8

  • question_answer
    A can compete \[\frac{1}{3}\] of a work in 5 days and B, \[\frac{2}{5}\]of the work In 10 days. In how many days both A and B together can complete the work?

    A)  10                   

    B)  \[9\frac{3}{8}\]

    C)  \[8\frac{4}{5}\]

    D)  \[7\frac{1}{2}\]

    Correct Answer: B

    Solution :

    [b] Total time taken by A=15 days Total time taken by B = \[\frac{10\times 5}{2}\]= 25 days \[\therefore \] (A+B)'s l day's work \[=\frac{1}{15}+\frac{1}{25}=\frac{5+3}{75}=\frac{8}{75}\] \[\therefore \] the work will be completed in \[\frac{75}{8}=9\frac{3}{8}\] days.


You need to login to perform this action.
You will be redirected in 3 sec spinner