A boy buys 9 apples for Rs.9.60 and sells them at 11 for Rs.12. Find his percentage gain or loss.

Explanation

To find the percentage gain or loss for the boy who buys and sells apples, we can follow these steps:

### Step 1: Calculate the Cost Price (CP) of One Apple
The boy buys 9 apples for Rs. 9.60.
To find the cost price of one apple, we divide the total cost by the number of apples.

\[
\text{Cost Price of 1 apple} = \frac{\text{Total Cost}}{\text{Number of Apples}} = \frac{9.60}{9} = 1.07 \text{ (approximately)}
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