第一次提价20%后价格为100*（1+20%）=$120然后降价20%后价格为120*(1-20%)=$96
故选a
a merchant raises the price of a $100 item by 20 percent.after finding that he cannot sell the item at the highter price,however,he discounts it by 20 percent.what is the final price of the item?
翻译：一个商人将货物提高20%定价出售.在他发现这么高的价格货物无法出售后,他将货物扣除20%折扣后出售.求最终货物的价格.
答案是：a.$96