Find the cost of 3 notebooks and 1 magazine in terms of y, if the cost of 1 notebook is Rs 2y and that of 1 magazine is Rs `(y + 3)`.

Options

A. Rs (3y + 3)
B. Rs (6y + 3)
C. Rs (7y + 3)
D. Rs (8y + 3)

Answer

To find the cost of 3 notebooks and 1 magazine in terms of \( y \), we will follow these steps:

### Step 1: Determine the cost of one notebook
The cost of one notebook is given as \( 2y \) rupees.

### Step 2: Calculate the cost of 3 notebooks
To find the cost of 3 notebooks, we multiply the cost of one notebook by 3:
\[ \text{Cost of 3 notebooks} = 3 \times (2y) = 6y \text{ rupees} \]

### Step 3: Determine the cost of one magazine
The cost of one magazine is given as \( y + 3 \) rupees.

### Step 4: Calculate the total cost of 3 notebooks and 1 magazine
Now, we need to add the cost of 3 notebooks and the cost of 1 magazine together:
\[ \text{Total cost} = \text{Cost of 3 notebooks} + \text{Cost of 1 magazine} \]
Substituting the values we calculated:
\[ \text{Total cost} = 6y + (y + 3) \]

### Step 5: Simplify the expression
Now, we combine like terms:
\[ 6y + y + 3 = (6y + y) + 3 = 7y + 3 \]

### Final Answer
Thus, the total cost of 3 notebooks and 1 magazine in terms of \( y \) is:
\[ \text{Total cost} = 7y + 3 \text{ rupees} \]

---