一道非常简单的英语数学题~
Yuanwentona114kmbikerideoveramountainpass.Sheaveraged24km/hrgoingupthemoutainand36km/hrgoingdowntheotherside.ThisallhappenedwhenYuaninfantasticshapeandcouldcycleforhours.Onceschoolwentbackinhercardiovascularfitnessdeterioratedandshegaveupcyclinguntilthefollowingsummer.Ifthetimespentgoingdownwasonehourless,findhowmanykilometersweretraveledintheuphillpartoftheride.