Ex 11.2, 5 - Chapter 11 Class 8 Direct and Inverse Proportions

Last updated at April 16, 2024 by Teachoo

Transcript

Ex 11.2, 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?Given,
Food is given to 20 animals for 6 days
If there were 10 more animals in his cattle,
Total number of animals = 20 + 10 = 30.
We need to find how long the food will last
Let the food last for 𝒙 days
Thus, our table looks like
As we increase the number of animals
the number of days food will last decrease
(As quantity of food is the same)
∴ They are in inverse proportion
6 × 20 = 𝒙 × 30
(6 × 20)/30 = 𝑥
(6 × 2)/3 = 𝑥
2 × 2 = 𝑥
𝑥 = 4
∴ Food will last for 4 days

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

Hi, it looks like you're using AdBlock :(

Displaying ads are our only source of revenue. To help Teachoo create more content, and view the ad-free version of Teachooo... please purchase Teachoo Black subscription.

Please login to view more pages. It's free :)

Teachoo gives you a better experience when you're logged in. Please login :)

Solve all your doubts with Teachoo Black!

Teachoo answers all your questions if you are a Black user!