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In a dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow will eat one bag of husk?

Correct Answer: 40

Explanation:

Let the required number of days be x

Less cows, More days (Indirect Proportion)


Less bags, Less days (Direct Proportion)



Cows 1 : 40 ] :: 40 : x
Bags 40 : 1


∴ 1 x 40 x x = 40 x 1 x 40


x = 40.


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