Increase 120 m by 130%
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Pile Y has the greater mean number of pages per book because it is 5 books less than pile W.
<h3>How to calculate greater mean number of pages?</h3>From the complete information, we can deduce that the number of each pile of book is given as follows:
<u>For pile W;</u>
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.
<u>For pile Y;</u>
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: brainly.com/question/9550536
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Answer:
23
Step-by-step explanation:
- Create an equation to find y: 3 =
- Calculate by adding: 3 =
- Multiply both sides of the equation by 7 : 21 = y - 2
- Move the variable to the left-hand side and change its sign : -y + 21 = -2
- Calculate and change signs : y = 23
y = 23