Question

alonso read 6 books in 18 months. what was his rate of reading in months per book? resize the right columns to represent the unit rate.

Explanation:

Step1: Identify the formula for rate

To find the rate in months per book, we use the formula: Rate = Total time / Number of books.

Step2: Substitute the values

Total time is 18 months and number of books is 6. So, Rate = $\frac{18}{6}$.

Step3: Calculate the result

$\frac{18}{6} = 3$. So the rate is 3 months per book. For the graph, the right blue column (representing 6 books) should stay at 6, and the right green column (representing months per book) should be resized to 3 (since 18 months for 6 books means 3 months per book, so the height for the unit rate (months per book) when there are 6 books would correspond to 3 months? Wait, actually, the unit rate is months per book, so for 1 book, it's 3 months. But the graph has 6 books on the x - axis for the right set. Wait, maybe the x - axis for the right set is still 6 books (blue) and we need to find the months per 6 books? No, the question is months per book. Wait, maybe the graph is a double - bar graph where one bar is for 6 books (blue) and the other for 18 months (green) on the left, and on the right, we need to show the unit rate. The unit rate is 3 months per book. So if we consider the number of books as 1 (for unit rate), but the graph has 6 books on the x - axis for the right. Wait, maybe the right blue bar is 6 books (same as left), and the right green bar should represent the time for 6 books at the unit rate. Wait, no. Let's re - think. The left bar: 6 books (blue) and 18 months (green). The right bar: we need to show the unit rate, which is months per book. So for 6 books, the time would be 6 3 = 18 months (which matches the left). Wait, maybe the right green bar should be resized to 3? No, that doesn't make sense. Wait, the unit rate is months per book, so for 1 book, it's 3 months. But the graph has 6 books on the x - axis for the right. Maybe the x - axis for the right is 1 book? No, the label is 6 books. Wait, maybe the problem is to find the time per 6 books at the unit rate? No, the question is "rate of reading in months per book". So the calculation is 18 months / 6 books = 3 months per book. So the unit rate is 3 months per book. So if we have a bar for 1 book (but the graph has 6 books), maybe the right green bar (representing months) should be 3 times the height of a 1 - book bar, but since the left has 6 books and 18 months, the right should have 6 books (blue) and 36? No, I think I made a mistake. Let's go back to the calculation. 18 months for 6 books. To find months per book, divide 18 by 6, which is 3. So the rate is 3 months per book. So in the graph, the right green bar (which was 18 for 6 books on the left) should be resized to 3 (if we consider the number of books as 1), but the graph has 6 books on the x - axis. Wait, maybe the graph is designed such that the blue bar is the number of books and the green bar is the time. On the left, blue = 6 (books), green = 18 (months). On the right, blue = 6 (books), and green should be the time for 6 books at the unit rate. Wait, no, the unit rate is per book. So for 6 books, the time would be 6 * 3 = 18 months (which is the same as left). That can't be. Wait, maybe the graph is a bit confusing. But the calculation part: 18 divided by 6 is 3. So the rate is 3 months per book.

Answer:

The rate of reading is 3 months per book. For the graph, the right green bar (representing months) should be resized to a height corresponding to 3 (if the scale is such that the left green bar is 18 for 6 books, then the right green bar for the unit rate (months per book) when there are 6 books? No, the correct calculation is 18÷6 = 3, so the rate is 3 months per book.