A beaker contains 200 grams of sugar water with a concentration of a% (sugar water with a concentration of a% refers to a gram of sugar per 100 grams of sugar water). After heating, 40 grams of water evaporates. What is the concentration of the remaining sugar? ?
一个烧杯里盛有浓度是a%的糖水200克(浓度是a%的糖水是指每100克糖水中含糖a克)，加热之后，40克的水分蒸发了，余下的糖的浓度是多少？
<result>1.25</result>