One notebook costs Rs. 10 and one pencil costs Rs. 2. What is the cost of x notebooks and y pencils?

Answer

To find the total cost of \( x \) notebooks and \( y \) pencils, we can follow these steps:

1. **Identify the cost of one notebook**:
The cost of one notebook is given as Rs. 10.

2. **Calculate the cost of \( x \) notebooks**:
Since one notebook costs Rs. 10, the cost of \( x \) notebooks will be:
\[ \text{Cost of } x \text{ notebooks} = 10 \times x = 10x \]

3. **Identify the cost of one pencil**:
The cost of one pencil is given as Rs. 2.

4. **Calculate the cost of \( y \) pencils**:
Since one pencil costs Rs. 2, the cost of \( y \) pencils will be:
\[ \text{Cost of } y \text{ pencils} = 2 \times y = 2y \]

5. **Calculate the total cost**:
To find the total cost of \( x \) notebooks and \( y \) pencils, we add the cost of notebooks and the cost of pencils:
\[ \text{Total cost} = \text{Cost of } x \text{ notebooks} + \text{Cost of } y \text{ pencils} = 10x + 2y \]

Thus, the total cost of \( x \) notebooks and \( y \) pencils is:
\[ \text{Total cost} = 10x + 2y \]