Remember Alessandra (Mrs. Stick’s friend from ‘Time is Money’)? Well, to tell you more about her she has four sons. To celebrate Siena Palio this year she has bought 39 horses for them. In order to divide the horses between her sons she has drawn the following rules:

The oldest son will receive one half, the next a quarter, the third an eighth and the youngest one tenth of the total horses. This has however left the brothers in a dilemma as to how they can divide the bounty among themselves without cutting up a horse.
This was until Moonface appears upon the scene.Dismounting from his horse, he asks if he might help, for he knew just what to do. The brothers gratefully accepted his offer.Adding his own camel to Alessandra’s 39, he divided the 40 as per the will. The oldest son received 20, the next 10, the third 5 and the youngest 4. One horse remained: this was his, which he mounted and rode away.
Scratching their heads in amazement, they started calculating. The oldest thought : is not 20 greater than the half of 39? Someone must have received less than his proper share ! But each brother discovered that he had received more than his due. How is it possible?