I think the following maybe helpful.
Using we can find k.
Therefore
now you require so
Can you finish it from here?
According to Zipf's Law, the number of cities with a population greater than S is inversely proportional to S. In 2000, there were 48 US cities with a population greater than 350,000. estimate the number of US cities with a population greater than 200,000.
Any help..! I would really appreciate it.!
"number N of cities with a population greater than S is inversely proportional to S" means that there exists a non-zero constant k such that . So we have and from this we can calculate k. Then we use again, with k we just calculated, to obtain the number of US cities with a population greater than 200,000.