The third grade students need to use two kinds of red and green ribbons as props. The school currently has a red ribbon of 35 decimeters and a green ribbon of 60 decimeters. Then these two ribbons should be cut into short ribbons of the same length, and there is no surplus. How many decimeters is the longest ribbon?
三年级同学要用红绿两种丝带做道具，学校现有红丝带35分米，绿丝带60分米，那么要把这两根丝带剪成长度一样的短丝带，且没有剩余，每根段丝带最长是多少分米？
<result>5</result>