瓶子５分之４的水+瓶子重６００公克，３分之以１的水+瓶子重３２０公克，問空瓶子本有多重？
回答 (2)
2017-06-04 7:21 am
4x/5-x/3=600-320
(12-5)x/15=280
x=15*280/7=600
空瓶子=600-(4/5)*600=600-480=120 克
(12-5)x/15=280
x=15*280/7=600
空瓶子=600-(4/5)*600=600-480=120 克
2017-06-01 11:15 pm
設全滿水重 x 公克
(4/5) x - (1/3) x = 600 -320
(7/15) x = 280
x = 600
空瓶重 = 600 - (4/5)(600) = 120 (公克) ....Ans
(4/5) x - (1/3) x = 600 -320
(7/15) x = 280
x = 600
空瓶重 = 600 - (4/5)(600) = 120 (公克) ....Ans
收錄日期: 2021-04-24 00:27:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170601150119AAj7QoR