To find how much would be paid for 3 books, follow the steps below.
Step 01: Find the price of one book.
Let's say the price of one book is x.
Then, the price of 7 books is 7 times x, which is 56 rupes.
![7x=56](https://img.qammunity.org/2023/formulas/mathematics/high-school/2vcb0rpzptv200yvgd1cujgj34544s3slu.png)
To find x, let's divide both sides by 7:
![\begin{gathered} (7x)/(7)=(56)/(7) \\ 1x=8 \\ x=8 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/196lsjmnru3p1tv7ccw822tk82cmm2qvdt.png)
So, the price of one book is 8.
Step 02: Find the price of 3 books.
If the price of one book is 8, the price of 3 books (P) will be 3 times 8:
![\begin{gathered} P=3\cdot8 \\ P=24 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/paxpi1xhxs9rf533ncxy32ssfx3cc2wy2g.png)
Answer: It would be paid 24 rupees for 3 books.