The cost of 8 books is Rs. 56. Find the cost of 10 books.

Answer

To solve the problem step by step, we can use the unitary method. Here’s how we can find the cost of 10 books:

### Step 1: Find the cost of one book.
We know that the cost of 8 books is Rs. 56. To find the cost of one book, we divide the total cost by the number of books.

\[ \text{Cost of 1 book} = \frac{\text{Total Cost}}{\text{Number of Books}} = \frac{56}{8} = 7 \text{ Rs.} \]

### Step 2: Calculate the cost of 10 books.
Now that we know the cost of one book is Rs. 7, we can find the cost of 10 books by multiplying the cost of one book by 10.

\[ \text{Cost of 10 books} = \text{Cost of 1 book} \times 10 = 7 \times 10 = 70 \text{ Rs.} \]

### Final Answer:
The cost of 10 books is Rs. 70.

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