Question

一批钢材,用小卡车装载要45辆,用大卡车装载只要36辆.已知每辆大卡车装载比小卡车多装4吨,这批刚才有都少吨

Answer 1

假设这批钢材总共x吨,小卡车每小车装y吨,

x=45*y=36*(y+4),

x=720,y=16,

答：这批钢材总共720吨,小卡车每车装16吨,大卡车每车装20吨