Arnav buys a book costing Rs 600. If the rate of sales tax is 7%, then the total amount payable by him is.

Answer

To find the total amount payable by Arnav for the book he bought, we need to calculate the sales tax and then add it to the cost price of the book. Here’s how to do it step by step:

### Step 1: Identify the Cost Price (CP)
The cost price of the book is given as Rs 600.

### Step 2: Identify the Rate of Sales Tax
The rate of sales tax is given as 7%.

### Step 3: Calculate the Sales Tax
To calculate the sales tax, we use the formula:
\[ \text{Sales Tax} = \frac{\text{Rate of Sales Tax}}{100} \times \text{Cost Price} \]
Substituting the values:
\[ \text{Sales Tax} = \frac{7}{100} \times 600 \]

### Step 4: Perform the Calculation
Calculating the sales tax:
\[ \text{Sales Tax} = 7 \times 6 = 42 \]
So, the sales tax is Rs 42.

### Step 5: Calculate the Total Amount Payable
Now, we add the sales tax to the cost price to find the total amount payable:
\[ \text{Total Amount Payable} = \text{Cost Price} + \text{Sales Tax} \]
Substituting the values:
\[ \text{Total Amount Payable} = 600 + 42 \]

### Step 6: Perform the Final Calculation
Calculating the total amount:
\[ \text{Total Amount Payable} = 642 \]

Thus, the total amount payable by Arnav is Rs 642.

---