how to solve chain rule problems - Interview Questions

how to solve chain rule problems

If 4 men reap 40 acres in 30 days, how many acres will 18 men reap in 12 days ?

Answer : D. 72 Acres

In a dairy farm, 20 cows eat 20 bags in 20 days. In how many days one cow will eat one bag of husk ?

Answer : C. 20 days

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 ?

Answer : C. 40