600W x 0.7 = 420w
400W x 0.4 = 160w
total = 580 w
580 w / (600w+400w) = 58%
21.某甲的資產包括房地產 600 萬元與股票 400 萬元,房貸成數七成,股票..-阿摩線上測驗