A girl purchased a camera for Rs. 830 and sold it for Rs. 904.70. Find her profit and calculate it as a percentage.

Answer

To solve the problem step by step, follow these instructions:

### Step 1: Identify the Cost Price and Selling Price
- The cost price (CP) of the camera is given as Rs. 830.
- The selling price (SP) of the camera is given as Rs. 904.70.

### Step 2: Calculate the Profit
- Profit can be calculated using the formula:
\[ \text{Profit} = \text{Selling Price} - \text{Cost Price} \]
- Substitute the values:
\[ \text{Profit} = 904.70 - 830 \]
- Perform the subtraction:
\[ \text{Profit} = 74.70 \]

### Step 3: Calculate the Profit Percentage
- The profit percentage can be calculated using the formula:
\[ \text{Profit Percentage} = \left(\frac{\text{Profit}}{\text{Cost Price}}\right) \times 100 \]
- Substitute the values:
\[ \text{Profit Percentage} = \left(\frac{74.70}{830}\right) \times 100 \]
- Perform the division:
\[ \text{Profit Percentage} = 0.09 \times 100 \]
- Finally, calculate the percentage:
\[ \text{Profit Percentage} = 9\% \]

### Final Answer
- The profit is Rs. 74.70 and the profit percentage is 9%.