A shopkeeper buys a toy for Rs. 250 and sells it for Rs. 285. Find his gain and gain percent.

Explanation

To solve the problem step by step, we will find the gain and the gain percent for the shopkeeper who bought a toy for Rs. 250 and sold it for Rs. 285.

### Step 1: Identify the Cost Price (CP) and Selling Price (SP)
- Cost Price (CP) = Rs. 250
- Selling Price (SP) = Rs. 285

### Step 2: Calculate the Gain
The gain can be calculated using the formula:
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