Two women were selling marbles int the market place -- 1 at 3 for a paise and other at 2 for a paise. One day both of them were obliged to return home when each had 30 marbles unsold. They put together the 2 lots of marbles and handling them over to a friend asked her to sell them at 5 for 2 paise. Now they were expecting to get 25 paise for the marbles as they would have got if sold separately but much to their surprise they go only 24 paise in total. Where did the 1 paise go ? Can anyone explain the mystery?