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  3. 8th Class
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  5. Direct and Inverse Proportions

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

  • question_answer
    A supply of food lasts for a week for 25 families. How long would it last if 5 more families are to be supplied?

    A)  5 days                                 

    B)  6 days 

    C)         \[\frac{5}{6}\] of a week

    D)         \[1\frac{1}{5}\]weeks

    Correct Answer: C

    Solution :

    The number of weeks the food lasts is inversely proportional to the number of families. \[\therefore \]  \[25:30:x:1\] \[\Rightarrow \]               \[x=\frac{25\times 1}{30}=\frac{5}{6}\] of a week.


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