Here, we need to find the scale being used for the image and how tall the actual book is.
To determine the scale being used for the image on the website; we have to consider how wide the image is and how wide the actual book is as given in the question.
Therefore, since
By Cross-product;
1.5x = 9
Therefore, x = 6inches.
Since, the scale being used for the image is;
3 × 6inches tall actual book
Therefore, the actual book is 18inches tall.
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