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8th Class Mathematics Direct and Inverse Proportions Question Bank Direct and Inverse Proportions

  • question_answer
    A certain number of men can finish a piece of work in 100 days. If, there were 10 men less, it would take 10 days more for the work to be finished. How many men were there originally?

    A)  \[75\]                                                  

    B)  \[82\]                  

    C)         \[100\]                

    D)         \[110\]

    Correct Answer: D

    Solution :

    Originally, let there be x men. Less men \[\Rightarrow \] more days. \[\therefore \] \[(x-10):x:\,\,:\,195:x\] \[\Rightarrow \]               \[(65\times x)=(95\times 195)\] \[\Rightarrow \]               \[x=\frac{95\times 195}{65}=285\]


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