A person buys an item and pays the salesperson 50 yuan. The salesperson misreads the decimal point of the price of the item and gives the customer 45.75 yuan.
某人买一件物品，付给营业员50元，营业员把这件商品价格的小数点看错一位，找给这位顾客45.75元，顾客说找多了，这件物品的标价是多少．
<result>42.5</result>