using chinese method od surplus and deficiency slove this problem... A certain man proceeding to Lucca on business to make a profit doubled his money, and then he spent there 14 denari. he then left and went through Florence; he there doubled his money and spent 14 denari. He then returned to Pisa, doubled his money and spent 14 denari. At the end of the three trips and after expenses thee was 8 denari. it is sought how much he had at the beginning. Solution Hey, could you please give me the points? I really need them... I promise to return the favor :).