A boy buys 9 apples for Rs 9.60 and sells them at 11 for Rs 12. Find his gain or loss percent.
Cost price of 9 apples = Rs.9.60
∴ cost price of 1 apple = Rs. 
Selling price of 11 apple = Rs. 12
∴ selling price of 1 apple = Rs. 
Gain = 
= 
3
A boy buys 9 apples for Rs 9.60 and sells them at 11 for Rs 12. Find his gain or loss percent.
Cost price of 9 apples = Rs.9.60
∴ cost price of 1 apple = Rs.
Selling price of 11 apple = Rs. 12
∴ selling price of 1 apple = Rs.
Gain =
=