\begin{tabular}{|l}\hline Question 11 \\ \hline A store sells pre-owned books. \\ - The store makes the same amount of money for each pre-owned book so \\ - the store makes \( \$ 19.05 \) from selling 3 pre-owned books. \\ How much more money does the store make from selling 47 pre-owned bod \\ than from selling only 18 pre-owned books? \\ \hline O \( \$ 86.15 \) \\ \hline\( \$ 465.45 \) \\ \hline \$552.45 \\ \hline\end{tabular}

To find out how much more money the store makes from selling 47 pre-owned books compared to selling 18 pre-owned books, we first need to determine the selling price per book. The store sells 3 books for $19.05, so the price per book is: \[ \text{Price per book} = \frac{\$19.05}{3} = \$6.35 \] Now, we can calculate the total earnings for selling 47 and 18 books: \[ \text{Earnings from 47 books} = 47 \times \$6.35 = \$298.45 \] \[ \text{Earnings from 18 books} = 18 \times \$6.35 = \$114.30 \] Next, we find the difference in earnings: \[ \text{Difference} = \$298.45 - \$114.30 = \$184.15 \] Now, let’s think about some common mistakes folks might make when working with problems like these! A common blunder is forgetting to calculate the price per book correctly or misinterpreting the problem's instructions. Always double-check your math and ensure you're clear on what is being asked—like whether it's calculating total earnings or just a difference, as in this case. For further reading, dive into topics like proportional reasoning or operations with decimals. Understanding how to navigate these areas will be wonderfully useful, especially when you encounter similar problems in real-world scenarios, like budgeting or sales analytics! Books on basic algebra or even business math can provide a solid foundation to expand your knowledge and sharpen your skills.