Pile Y has the greater mean number of pages per book because it is 5 books less than pile W.
How to calculate greater mean number of pages?
From the complete information, we can deduce that the number of each pile of book is given as follows:
For pile W;
Red books = 10 × 5 = 50 red books.
Blue books = 5 × 5 = 25 blue books.
Therefore, total books in pile W = 50 + 25 = 75 books.
Mathematically, the mean for each pile can be calculated by using the following formula:
Mean = [F(x)]/n
Mean = 75/10
Mean = 7.5.
For pile Y;
Red books = 10 × 5 = 50 red books.
Mean = [F(x)]/n
Mean = 50/5
Mean = 10.
In conclusion, pile Y has the greater mean number of pages per book because it is 5 books less than pile W.
Read more on mean here: https://brainly.com/question/9550536
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