2010-01-25 09:02:04 +0000 #1
stationery store selling two is priced at 120 yuan and 80 yuan commemorative coins, two coins each with 30% of the profits, priced at 120 yuan a good sale, A total of 1080 RMB money, want to buy a certain number of commemorative coins, if the price to buy 120 yuan in enough money, but the salesman was shown with this commemorative coins to pay him a result, profit and sell the same amount of stationery is priced at 80 yuan profit in the same coin much, a total number of commemorative coins to buy?