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

8th Class Mathematics Direct and Inverse Proportions Question Bank Direct & Inverse Proportional (Time & Work)

  • question_answer
    In 4 men reap 40 acres in 30 days. How many acres will 18 men reap in 12 days?

    A)  70                               

    B)  72      

    C)  60                   

    D)  68

    Correct Answer: B

    Solution :

    (b): 4 men, 30 days\[\Rightarrow \] 40 acres 1 men, 1 day \[\Rightarrow \frac{40}{4\times 30}\] acres. \[\therefore \] 18 men, 12 days \[\Rightarrow \frac{40\times 18\times 12~~}{4\times 30}=72\]acres


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