Adress priced originally at $39 is on sale for $26. by what percent has it been marked down?

There are 43333000 people that can like his page if all his fans share his page.

Explanation:

Since we have given that

Number of likes John's band's page has = 17000

Number of friends his fans has = 15% of his likes

which is given by

Now, number of people John's fan page potentially reach if all his fans share his page is given by

Number of people will like his page excluding his direct fans is given by

(We subtract 17000 from 43350000 because in our question we have to exclude the direct fans of him and 17000 likes are liked by his direct fans only.)

Hence, there are 43333000 people that can like his page if all his fans share his page.