2. Questions Bank
  3. 8th Class
  4. Mathematics
  5. Direct and Inverse Proportions

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

  • question_answer
    5 people can paint a wall in 5 hours. In how many hours can 3 people paint the same wall?

    A)  \[8\frac{2}{3}\] hours                   

    B)  \[8\frac{1}{3}\] hours   

    C)  \[9\frac{1}{3}\]hours   

    D)         8 hours

    Correct Answer: B

    Solution :

    The number of people and the amount of work done by them are inversely proportional. \[\therefore \]  \[5:3=x:5\] \[\Rightarrow \]               \[x=\frac{5\times 5}{3}=8\frac{1}{3}\] hours


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