Ek rupaiyya!!!

Well, I have question for you... The question is not so costly..... Only of Rs. 1 /-

Once A, B & C went to a restaurant. After having tea and light refreshment they asked for bill, the amount of bill was Rs. 30 /- They decided to pay the bill

amount on equal share. Everybody took out Rs. 10 /- from their pocket and paid the bill. They were yet sitting and gossiping in restaurant, Suddenly the

waiter realized that the amount of their bill was Rs. 25 /- not Rs. 30 /- He took Rs. 5 /- from counter and decided to return them. Then he thought they are 3

how will they share Rs. 5 /- ? So he has decided to keep Rs. 2 /- to him and return only Rs. 3 /- to them.

He came to their table and returned them Rs. 3 /- with apology. Everybody took Rs. 1 /- and put in their pockets.

Now my question is first time everyone paid Rs. 10 /- later they get Rs 1 /- refunded. So everybody paid Rs. 9 /-

Rs. 9 * 3 = Rs. 27 /-

The waiter put Rs 2 /- in his pocket.

Rs. 27 + Rs 2 = 29

So...... Where is the remaining Rs. 1 /-

Find out where is the remaining Rs. 1 /- OR everybody has to pay Rs. 1 /- to me :P