Staying Safe In Manchester.....
ChatterBank2 mins ago
No best answer has yet been selected by vishalsabnis. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Do you have to take into account that grass grows, so over time there is more grass to be eaten by the fewer cows?
This would lead to an exponential correlation rather than the expected linear one, and it could be that 20 cows is the magic figure that could be sustained indefinitely by that area of grass.