Once upon a time three boys went to a bookshop.There they chose a book worth 30 $ and purchased it.At that time the owner of shop wasnt there and his son(the shopkeeper) was handling the shop.Each of the three boy contributed 10$ and gave 30 $ to the shopkeeper.After sometime the shop owner returned and he found out that actual cost of book was 25 $.He gave 5 $ to shopkeeper and asked him to return the money to three boys.The shopkeeper went to three boys but he thought it would be very difficult to divide 5 $ equally between three of them so he gave them 1 $ each and kept remaining 2 $ for himself.
Now the book worths 9 $ (as they got 1 $ back) to each of the three boys.
9 X 3 = 27 .
2 $ are kept by the shopkeeper.
27+2 =29.
What happened to remaining 1$ ???????????

Now the book worths 9 $ (as they got 1 $ back) to each of the three boys.
9 X 3 = 27 .
2 $ are kept by the shopkeeper.
27+2 =29.
What happened to remaining 1$ ???????????