I'm baffled, yo.
Facebook is becoming a social superpower with 120 million registered users who log in at least once daily. They share 1 billion photos and 10 million videos each month. What is the average number of photos and videos that each active member posts? Round to the nearest ten thousandth.
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
hehe idk lol
The average per user would be the total number of photos divided by the number of users.
1,000,000,000 / 120,000,000
so, there are 1 billlion photos posted per 120M users. You want to find the number of photos per *one* user, so divide by the total number of users to find the average.
It's the same as saying over three days I've had twelve meetings at work (five on Monday, three on Tuesday and four on Wednesday). The average would be the total number of meetings divided by the number of days. Average number of As per B is always total As / total Bs ;)