Mrs. Kapoor goes to the market and after hassling with the fruit vendor is able to get
the price of a dozen bananas reduced by Rs.1, from the initial price. Thus she gets 1
banana extra for every rupee saved. The initial and final prices of a dozen bananas are (in
Rs.):

- 9, 8
- 12, 11
- 14, 13
- 24, 23