maths
posted by maihul on .
A girl buys 9 apples for Rs.9.60 and sells that at 11 for Rs. 12. What does she gain or loss.

at 12Rs/11apples that's 12/11Rs/apple
9 apples at that price is 12/11*9 = 108/11 Rs
108/119.60 = 9.829.60 = Rs 0.82