神马品牌网扬中际华园:Math!!!Math~~~~
来源：百度文库 编辑：神马品牌网 时间：2024/10/06 02:45:59
It took Sam 200 minutes to complete the difficult Sunday Times crossword puzzle. Stanley did the same puzzels in 160 minutes. By what frraction of an hour was Sam's time longer than Stanley?
(200-160)/60=40/60=2/3