Oh, I almost forgot to post the answer to yesterday's puzzle. If your answer is 22, then Congratulations! You are part of the 10%. :-)

Well, it goes like this:

15 chocolates for Rs 15.
These 15 wrappers will get 5 chocolates. So total is 15 + 5 = 20.
Out of these 5 wrappers, 3 can be exchanged for 1 chocolate. So total is 20 + 1 = 21.
The wrapper of this chocolate with 2 remaining wrappers gives one more chocolate. So total is 21 + 1 = 22.