Gopal gave his servant Rs.50/- to buy a kilogram of Desi Ghee. The servant went to the grocery shop and asked for a packet of Desi Ghee of 1 kilogram. The cost of the same was Rs.45/- and so the servant got Rs.5/- in return. Now what the servant did is, he kept Rs.2/- with himself and returned back Rs.3/- to his owner with the Ghee packet.
The owner acknowledges that the Ghee's cost was Rs.47/-. So this is Rs.47/- and Gopal's servant has Rs.2/- with him which both adds up to Rs.49/-.
So, where is one ruppee gone?????
see answer below