NCERT - Mathematics

Book: NCERT - Mathematics

Chapter: 13. Direct and Inverse Proportions

Subject: Maths - Class 8th

Q. No. 5 of Exercises 13.2

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5

A farmer has enough food to feed 20 animals in his cattle for 6 days. How long would the food last if there were 10 more animals in his cattle?

A farmer has enough food to feed 20 animals in his cattle for 6 days.

More the number of animals, the lesser will be the number of days food lasts.


Therefore, the number of animals and number of days are inversely proportional to each other.


Hence,


20 × 6 = 30 × x


x = 4 days


Now, food will last in 4 days.


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