1. (2022·哈尔滨模拟) With the development of science, many kinds of robots can help us do a lot of work. For example, deebots (地宝) are smart enough to help us sweep and mop(拖地) the floor. Linda wants to buy two deebots on special days, one is for herself and the other is for her mother. She should save           yuan than usual.

The price on usual days	￥1300
The price on special days	￥900
Good news: If you spend more than 1000 yuan in buying deebots, you will enjoy a 10% off for the whole list on special days.